Arkadaslar bu sorulari da baska bir paylasimda buldum lakin cevaplarinda emin olamiyorum. Eger ki cevaplarindan emin olanlar varsa paylasirsa sevinirim. Simdiden tesekkurler.
51. What statement is not true regarding the function of steam turbine
Steam turbine extracts mechanical work from the energy stored in steam
Steam turbine generates electrical energy
Sometimes steam turbine is connected to a reduction gear
Steam turbine is used as cargo pump drive source
Steam turbine produces steam for steam engine
53. “Gas will expand when heat is applied”
What statement below has the same meaning with this law of phsycs
Gas expands unless heat is applied
When gas expand, its temperature decreases
Whenever gas is heated, it expands
Gas expands, otherwise heat is applied
If we expand the gas, it will heat
54. “When a gas is compressed, the temperature of the gas will increase”
What word can be used instead of underlined word without changing meaning
Decrease
Raise
Reduce
Expand
Exceed
55. What statement is not true regarding gas turbines
Gas turbine operates on the Otto Cycle
Gas turbine has low manoeuvring capability
Gas turbine are used on super tankers, naval ships or aircrafts
Gas turbine is not attractive for a ship owner because of high fuel cost
Gas turbine is an internal combustion engine
71. In a gas turbine , the pressure of air is changed
At the inlet
In the combustion chamber
Through the compressor
During the combustion
Through the inlet of turbine
72. What factor is not primarily taken into account by a ship owner when choosing an engine
Cost
Propulsive efficiency
Size and weight
Maintenance work load
Installation time
77. “The piston is forcing the exhaust gas out of the cylinder by moving downward”
What word must be changed to get the true meaning
Piston
Exhaust
Gas
Cylinder
Downword
78. What statement is not true regarding two-stroke engines?
Two stroke engines are uniflow and cross flow types
Two stroke engines have ports on liner
Crankshaft completes two revolutions in a two stroke cycle
Compression and power strokes are two strokes comprising the cycle
Two-stroke engines may be fitted with crossheads
80. .......is not stationary part of a diesel engine
Crankcase
Crosshead
Bedplate
Cylinder
Liner
81. Bedplate is seated on the ..........
Cylinder block
Crankcase
Engine frame
Girders
Foundation
85. The cooling medium for cylinder cooling circulates through
Jacket
Main bearings
Crankcase
Sump
Shafting
95. The purpose of cylinder cooling is:
Maintaining the engine temperature at a certain level of operation
Retaining the piston temperature at constant speed
Making liner more slippery
Treating the fresh water before starting the engine
Reducing the crankshaft revolution speed
98. Fuel main is located:
On the bunkering station
On the storage tank
On the service tank
In the engine room
Underneath the cargo spaces
102. What is not a part of propulsion system
Propeller
Shafting
Main thrust block
Reduction Gear
Rudder
127. What statement is not true regarding boilers
Boilers produce steam for machinery
Boilers are used for main propulsion plant
Boilers can be classified as fire tube and water tube
Boilers can be found on all motor vessels
Boiler feedwater is circulated by a feedwater pump in all boilers
129. What statement is not true regarding tubes of a fire tube boiler
All the tubes are made of heat-resistant metal
All the tubes are surrounded by water
All the tubes immersed in water
All the tubes are mounted vertically
The hot gases pass through these tubes
132. The moisture is removed from the steam by means of
Downcomer
Generating tubes
Water drum
Steam drum
Waterwall tubes
133. The purpose of attemperator is:
To remove the impurities from the feedwater
To reduce the temperature of superheated steam
To supply heat recovery
To remove non-condensable gases from boiler
To remove all moisture from the steam
135. Non-condensable gases are removed from the condenser by:
Air heater
Air ejector
Desuperheater
Attemperator
Deaerator
136. The function of a deaerator is :
Acting as a storage tank to keep water level
Keeping a constant pressure on the feed system
Keeping water free of air
Acting as a contact feed heater
all
137. What statement is not true?
Soot blower keeps clear of combustion residues
De-aerator keeps water free of air
Air ejector removes non-condensable gases from economizer
Superheater removes the moisture from steam.
Attemperator reduces the temperature of superheated steam
138. “Raw water is not ture enough to use in boiler”
What word can be exactly used instead of underlined word?
Treated
Untreated
Dilute
Dissolved
Salt
139. The dissolved salts in feedwater may cause:
Reduction in heat transfer by scale formation
Hardness
Caustic cracking
Tube failure from overheating
all
140. Caustic cracking is the result of:
Foaming
Priming
Excess of alkaline salts
Suspension
Leakage
141. pH Value is achieved by adding:
Hydrazine
Coagulant
Sulphure
Chloride
Magnesium
142. Corrosion within boiler is prevented by:
Polymer treatment
Adding anti-foam
Deaeration
Amine treatement
Adding coagulants
143. Scale and sludge formation is prevented by:
Neutralizing amines
Filming amines
Polymer treatment
Keeping pH value
Deaeration of the boiler by hydrazine
144. “The dissolved gases adhere to the heating surfaces”
What word can be exactly used instead of underlined word?
Corrode
Stick
Contaminate
Crack
Suspend
150. ..........are the common parts within the 2 and 4 stroke diesel engines
Piston, valves, cylinder, fuel injector
Crankshaft, crosshead, cylinder
Turbocharger, piston, gudgeonpin, cylinder
Crankshaft, connecting rod, pistons
Cylinder, connecting road, pistons
158. Pre-ignation can be caused by ........ in an operating diesel engine
Excessively late fuel injection
Oil in the air charge
Water in the fuel
Injection continuing after the fuel charge is ignited
None above
167. Which of the following oil seperation units makes use of gravity
Clarifier
Purifier
Settling tank
Filter
Centrifuge
169. What is not a component of two-stage air compressor
Suction valve
Throttle valve
Cooler
Discharge valve
Drain valve
170. What statement is not true regarding air receivers?
The pressure of air is 20-30 bar
The receiver must store enough air for twelve engine starts
The pressure inside is controlled by a pressure gauge
The air receivers are self-cleaning devices
Drain valves are fitted to drain impurities
171. Air receivers are not fitted with;
Pressure gauge
Reducing valve
Drain valve
Relief valve
Strainer
172. Air receivers are protected against high pressure by;
Pressure gauge
Reducing valve
Relief valve
Drain valve
Silencer
173. Using a semi- permeable to retain salt and impurities from sea water is:
Distillation
Evaporation
Vaporization
Condensation
Reverse osmosis
174. Seawater is pumped into fresh water generation unit by:
Booster pump
Ejector pump
Distilate pump
Sanitary pump
Transfer pump
175. What process is not related to fresh water generation?
Reverse osmosis
Distilation
Evaporation
Compression
Condensation
176. The feed water is evaporated in the evporator by means of :
Brine ejector
Condenser
Ejector pump
Air ejector
Cylinder cooling water
179. Ammonia is extremely toxic” What word can replace the underlined word
Harmless
Poisonous
Perishable
Raw
Corrosive
180. Air conditioning system does not involve:
Heating the air
Ventilating
Compressing the air
Cooling the air
207. A propulsion diesel engine is normally shut down by ........
Shutting off the air supply
Overspeeding the engine
Securing the fuel supply
Securing the ignition system
All above
218. Which valve is normally closed when charging an R-22 or R-134a refrigeration system through the high side?
The thermal expansion valve
The dehydrator inlet valve
The suction line valve
Both the thermal expansion valve and dehydrator inlet valve
The liquid line king valve
219. When operating at high or low speed in the use of nozzles in a turbine, attention and precaution must be taken that .......
The nozzles in use should be wide open
Operation with a few nozzles as it’s economical
The nozzles not in use must be tightly closed
All above
Only a and b
225. When does a two stroke cycle diesel engine produce a power stroke in each cylinder
Once in every 2 revolutions of the crankshaft
Once for every 4 stroke of the piston
Once for every 2 stroke of the piston
Directly after the exhaust stroke
None of the above
232. ...... Are not self-priming pumps
Screw pumps
Reciprocating pumps
Gear pumps
Centrifugal pumps
Rotary positive displacement pumps
234. .......is not a valve type?
Relief valve
Stop valve
Throttling valve
Check valve
Return valve
235. Metal made by combining two or more methalic elements is:
Monel
Alloy
Cast
Forged
Malleable
237. What statement is not true regarding butterfly valves?
Butterfly valves are stop valves
Butterfly valves are small, quick-acting valves
Butterfly valves can be used for throttling
Butterfly valves can be uesd in water systems and lube systems
A spherical disc is used open and close the valve
238. To control the supply of expandable fluids such as compressed air, steam, a .....is used
Cock
Stop valve
Throttling valve
Relief valve
Drain valve
240. What associate is not true?
Air conditioning-cold room
Oil seperation – clarifier
Pump – positive displacement pump
Valve – non-return valve
Fresh water generation - evaporator
241.Marine electrical equipment are:
Generators
Motors,
Batteries,
Switchboards,
all
242. The machine that generates electrical energy is:
Generator,
Electric motor,
Battery,
Transformer,
rectifier
243. The machine that converts the electrical energy into mechanical energy is a:
Generator,
Motor,
Armature,
Transformer,
stator
244. Which of the following parts is not of a generator?
Rotor,
Stator,
Flywheel,
Winding,
Armature
245. What part of generator is not rotating?
Rotor,
Armature,
Rotorshaft,
Slip rings,
stator
246. The parts of generator that connect the high output voltage to the external circuit are:
Coils,
Rotors,
Slip rings and brushes,
Stators,
Armatures
247. What cools the generator by dissipating heat in the generator frame?
Rotor assembly,
Stator assembly,
Brushes,
Fan assembly,
Coils of wire
248. Which of the following devices are loads?
Alternator,
Wires,
Distribution panel,
Motor,
Coil
250. What statement is not true regarding switchboards?
Switchboards distribute electric power,
There are feeders that extend from switchboard to the distribution panels,
Switchboards are divided into sections by busbar isolators,
Switchboards receive power directly from transformer,
Switchboards are connected to the panels and circuits
251. What is used to seperate operating electrical equipment from the rest of the electric system
Busbars,
Emergency switchboard
Batteries,
Branch circuits,
Circuit breakers and fuses
253. The voltage generated by an alternator is:
110 V.,
440 V,
220 V,
680 V,
120 V.
254. What statement is true regarding DC motors?
DC motors are more common than AC motor,
DC motors are easy to maintain,
DC motors are less expensive than AC motors,
DC motors have the constant speed characteristic,
DC motors run on the principles of attraction and repulsion of magnetism
255. What statement is not true regarding AC motors?
AC motors consist of two main assemblies : rotor and stator,
Rotors in an AC motor are turned by magnetic field,
The rotating field in an AC motor induces electromotor force,
AC motors operate on direct current,
Single-phase AC motors are also called squirrel cage motors
256. What can be a source of electric power?
An electric motor,
A fuse,
A battery,
A control panel,
A rotor.
257.“electrolite, anode, electrode”.The terms are related to a:
Cell,
Fuse,
Coil,
Pole,
Stator
258. What is the solution that reacts with the electrodes?
Battery,
Electrolyte,
Cell,
Anode,
Lead.
259. A lead-acid battery of 6 cells can give the voltage of;
2,2 V,
7 V,
12 V,
1,4 V,
6 V.
260. What statement is not true regarding electrolyte?
The electrolyte reacts with the electrodes
The electrolyte provides a path for electron flow,
It may be a salt, an acid, or an alcaline solution,
Electrolytes are non-conducting materials,
It can be a liquid or dry substance.
51. What statement is not true regarding the function of steam turbine
Steam turbine extracts mechanical work from the energy stored in steam
Steam turbine generates electrical energy
Sometimes steam turbine is connected to a reduction gear
Steam turbine is used as cargo pump drive source
Steam turbine produces steam for steam engine
53. “Gas will expand when heat is applied”
What statement below has the same meaning with this law of phsycs
Gas expands unless heat is applied
When gas expand, its temperature decreases
Whenever gas is heated, it expands
Gas expands, otherwise heat is applied
If we expand the gas, it will heat
54. “When a gas is compressed, the temperature of the gas will increase”
What word can be used instead of underlined word without changing meaning
Decrease
Raise
Reduce
Expand
Exceed
55. What statement is not true regarding gas turbines
Gas turbine operates on the Otto Cycle
Gas turbine has low manoeuvring capability
Gas turbine are used on super tankers, naval ships or aircrafts
Gas turbine is not attractive for a ship owner because of high fuel cost
Gas turbine is an internal combustion engine
71. In a gas turbine , the pressure of air is changed
At the inlet
In the combustion chamber
Through the compressor
During the combustion
Through the inlet of turbine
72. What factor is not primarily taken into account by a ship owner when choosing an engine
Cost
Propulsive efficiency
Size and weight
Maintenance work load
Installation time
77. “The piston is forcing the exhaust gas out of the cylinder by moving downward”
What word must be changed to get the true meaning
Piston
Exhaust
Gas
Cylinder
Downword
78. What statement is not true regarding two-stroke engines?
Two stroke engines are uniflow and cross flow types
Two stroke engines have ports on liner
Crankshaft completes two revolutions in a two stroke cycle
Compression and power strokes are two strokes comprising the cycle
Two-stroke engines may be fitted with crossheads
80. .......is not stationary part of a diesel engine
Crankcase
Crosshead
Bedplate
Cylinder
Liner
81. Bedplate is seated on the ..........
Cylinder block
Crankcase
Engine frame
Girders
Foundation
85. The cooling medium for cylinder cooling circulates through
Jacket
Main bearings
Crankcase
Sump
Shafting
95. The purpose of cylinder cooling is:
Maintaining the engine temperature at a certain level of operation
Retaining the piston temperature at constant speed
Making liner more slippery
Treating the fresh water before starting the engine
Reducing the crankshaft revolution speed
98. Fuel main is located:
On the bunkering station
On the storage tank
On the service tank
In the engine room
Underneath the cargo spaces
102. What is not a part of propulsion system
Propeller
Shafting
Main thrust block
Reduction Gear
Rudder
127. What statement is not true regarding boilers
Boilers produce steam for machinery
Boilers are used for main propulsion plant
Boilers can be classified as fire tube and water tube
Boilers can be found on all motor vessels
Boiler feedwater is circulated by a feedwater pump in all boilers
129. What statement is not true regarding tubes of a fire tube boiler
All the tubes are made of heat-resistant metal
All the tubes are surrounded by water
All the tubes immersed in water
All the tubes are mounted vertically
The hot gases pass through these tubes
132. The moisture is removed from the steam by means of
Downcomer
Generating tubes
Water drum
Steam drum
Waterwall tubes
133. The purpose of attemperator is:
To remove the impurities from the feedwater
To reduce the temperature of superheated steam
To supply heat recovery
To remove non-condensable gases from boiler
To remove all moisture from the steam
135. Non-condensable gases are removed from the condenser by:
Air heater
Air ejector
Desuperheater
Attemperator
Deaerator
136. The function of a deaerator is :
Acting as a storage tank to keep water level
Keeping a constant pressure on the feed system
Keeping water free of air
Acting as a contact feed heater
all
137. What statement is not true?
Soot blower keeps clear of combustion residues
De-aerator keeps water free of air
Air ejector removes non-condensable gases from economizer
Superheater removes the moisture from steam.
Attemperator reduces the temperature of superheated steam
138. “Raw water is not ture enough to use in boiler”
What word can be exactly used instead of underlined word?
Treated
Untreated
Dilute
Dissolved
Salt
139. The dissolved salts in feedwater may cause:
Reduction in heat transfer by scale formation
Hardness
Caustic cracking
Tube failure from overheating
all
140. Caustic cracking is the result of:
Foaming
Priming
Excess of alkaline salts
Suspension
Leakage
141. pH Value is achieved by adding:
Hydrazine
Coagulant
Sulphure
Chloride
Magnesium
142. Corrosion within boiler is prevented by:
Polymer treatment
Adding anti-foam
Deaeration
Amine treatement
Adding coagulants
143. Scale and sludge formation is prevented by:
Neutralizing amines
Filming amines
Polymer treatment
Keeping pH value
Deaeration of the boiler by hydrazine
144. “The dissolved gases adhere to the heating surfaces”
What word can be exactly used instead of underlined word?
Corrode
Stick
Contaminate
Crack
Suspend
150. ..........are the common parts within the 2 and 4 stroke diesel engines
Piston, valves, cylinder, fuel injector
Crankshaft, crosshead, cylinder
Turbocharger, piston, gudgeonpin, cylinder
Crankshaft, connecting rod, pistons
Cylinder, connecting road, pistons
158. Pre-ignation can be caused by ........ in an operating diesel engine
Excessively late fuel injection
Oil in the air charge
Water in the fuel
Injection continuing after the fuel charge is ignited
None above
167. Which of the following oil seperation units makes use of gravity
Clarifier
Purifier
Settling tank
Filter
Centrifuge
169. What is not a component of two-stage air compressor
Suction valve
Throttle valve
Cooler
Discharge valve
Drain valve
170. What statement is not true regarding air receivers?
The pressure of air is 20-30 bar
The receiver must store enough air for twelve engine starts
The pressure inside is controlled by a pressure gauge
The air receivers are self-cleaning devices
Drain valves are fitted to drain impurities
171. Air receivers are not fitted with;
Pressure gauge
Reducing valve
Drain valve
Relief valve
Strainer
172. Air receivers are protected against high pressure by;
Pressure gauge
Reducing valve
Relief valve
Drain valve
Silencer
173. Using a semi- permeable to retain salt and impurities from sea water is:
Distillation
Evaporation
Vaporization
Condensation
Reverse osmosis
174. Seawater is pumped into fresh water generation unit by:
Booster pump
Ejector pump
Distilate pump
Sanitary pump
Transfer pump
175. What process is not related to fresh water generation?
Reverse osmosis
Distilation
Evaporation
Compression
Condensation
176. The feed water is evaporated in the evporator by means of :
Brine ejector
Condenser
Ejector pump
Air ejector
Cylinder cooling water
179. Ammonia is extremely toxic” What word can replace the underlined word
Harmless
Poisonous
Perishable
Raw
Corrosive
180. Air conditioning system does not involve:
Heating the air
Ventilating
Compressing the air
Cooling the air
207. A propulsion diesel engine is normally shut down by ........
Shutting off the air supply
Overspeeding the engine
Securing the fuel supply
Securing the ignition system
All above
218. Which valve is normally closed when charging an R-22 or R-134a refrigeration system through the high side?
The thermal expansion valve
The dehydrator inlet valve
The suction line valve
Both the thermal expansion valve and dehydrator inlet valve
The liquid line king valve
219. When operating at high or low speed in the use of nozzles in a turbine, attention and precaution must be taken that .......
The nozzles in use should be wide open
Operation with a few nozzles as it’s economical
The nozzles not in use must be tightly closed
All above
Only a and b
225. When does a two stroke cycle diesel engine produce a power stroke in each cylinder
Once in every 2 revolutions of the crankshaft
Once for every 4 stroke of the piston
Once for every 2 stroke of the piston
Directly after the exhaust stroke
None of the above
232. ...... Are not self-priming pumps
Screw pumps
Reciprocating pumps
Gear pumps
Centrifugal pumps
Rotary positive displacement pumps
234. .......is not a valve type?
Relief valve
Stop valve
Throttling valve
Check valve
Return valve
235. Metal made by combining two or more methalic elements is:
Monel
Alloy
Cast
Forged
Malleable
237. What statement is not true regarding butterfly valves?
Butterfly valves are stop valves
Butterfly valves are small, quick-acting valves
Butterfly valves can be used for throttling
Butterfly valves can be uesd in water systems and lube systems
A spherical disc is used open and close the valve
238. To control the supply of expandable fluids such as compressed air, steam, a .....is used
Cock
Stop valve
Throttling valve
Relief valve
Drain valve
240. What associate is not true?
Air conditioning-cold room
Oil seperation – clarifier
Pump – positive displacement pump
Valve – non-return valve
Fresh water generation - evaporator
241.Marine electrical equipment are:
Generators
Motors,
Batteries,
Switchboards,
all
242. The machine that generates electrical energy is:
Generator,
Electric motor,
Battery,
Transformer,
rectifier
243. The machine that converts the electrical energy into mechanical energy is a:
Generator,
Motor,
Armature,
Transformer,
stator
244. Which of the following parts is not of a generator?
Rotor,
Stator,
Flywheel,
Winding,
Armature
245. What part of generator is not rotating?
Rotor,
Armature,
Rotorshaft,
Slip rings,
stator
246. The parts of generator that connect the high output voltage to the external circuit are:
Coils,
Rotors,
Slip rings and brushes,
Stators,
Armatures
247. What cools the generator by dissipating heat in the generator frame?
Rotor assembly,
Stator assembly,
Brushes,
Fan assembly,
Coils of wire
248. Which of the following devices are loads?
Alternator,
Wires,
Distribution panel,
Motor,
Coil
250. What statement is not true regarding switchboards?
Switchboards distribute electric power,
There are feeders that extend from switchboard to the distribution panels,
Switchboards are divided into sections by busbar isolators,
Switchboards receive power directly from transformer,
Switchboards are connected to the panels and circuits
251. What is used to seperate operating electrical equipment from the rest of the electric system
Busbars,
Emergency switchboard
Batteries,
Branch circuits,
Circuit breakers and fuses
253. The voltage generated by an alternator is:
110 V.,
440 V,
220 V,
680 V,
120 V.
254. What statement is true regarding DC motors?
DC motors are more common than AC motor,
DC motors are easy to maintain,
DC motors are less expensive than AC motors,
DC motors have the constant speed characteristic,
DC motors run on the principles of attraction and repulsion of magnetism
255. What statement is not true regarding AC motors?
AC motors consist of two main assemblies : rotor and stator,
Rotors in an AC motor are turned by magnetic field,
The rotating field in an AC motor induces electromotor force,
AC motors operate on direct current,
Single-phase AC motors are also called squirrel cage motors
256. What can be a source of electric power?
An electric motor,
A fuse,
A battery,
A control panel,
A rotor.
257.“electrolite, anode, electrode”.The terms are related to a:
Cell,
Fuse,
Coil,
Pole,
Stator
258. What is the solution that reacts with the electrodes?
Battery,
Electrolyte,
Cell,
Anode,
Lead.
259. A lead-acid battery of 6 cells can give the voltage of;
2,2 V,
7 V,
12 V,
1,4 V,
6 V.
260. What statement is not true regarding electrolyte?
The electrolyte reacts with the electrodes
The electrolyte provides a path for electron flow,
It may be a salt, an acid, or an alcaline solution,
Electrolytes are non-conducting materials,
It can be a liquid or dry substance.