This article provided answers to diplomas MSBTE Exam POWER PLANT ENGINEERING PER 22566 mcq in all chapters. We have done a lot of research and created a possible set of multiple-choice questions for POWER PLANT ENGINEERING PER 22566.
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ME5I Scheme / 5th Semester Syllabus of All Subject
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POWER PLANT ENGINEERING PER 22566 All mcq in the subject.
POWER PLANT ENGINEERING PER 22566 mcq`s given in each chapter below
POWER PLANT ENGINEERING PER 22566 mcq
1.Compression ratio of I.C. engine is
A.the ratio of volumes of air in cylinder before compression stroke and after compression stroke.
B. volume displaced by piston per stroke and clearance volume in cylinder
C. ratio of pressure after compression and before compression
D. swept volume/cylinder volume
2.Indicated power of a 4-stroke engine is equal to… where p = mean effective pressure,L = strokeA = area of piston andN = rpm of engine
A. pLAN
B. 2pLAN
C. pLAN/2
D. 4pLAN
3.If the temperature of intake air in internal combustion engine increases, then its efficiency will
A. Remain same
B.Decrease
C. Increase
D. None of these
4.The operation of forcing additional air under pressure in the engine cylinder is known as
A. Scavenging
B.Turbulence
C.Supercharging
D. Pre-ignition
5.The ignition quality of petrol is expressed by
A. Cetane number
B. Octane number
C. Calorific value
D. All of these
6.The probability of knocking in diesel engines is increased by
A. High self ignition temperature
B.Low volatility
C. Higher viscosity
D. All of these
7.The knocking in spark ignition engines can be reduced by
A. Retarding the spark
B. Increasing the engine speed
C. Both (A) and (B)
D.None of these
8.Which of the following statement is correct?
A. Compression ratio for petrol engines varies from 6 to 10
B. Higher compression ratio in diesel engines results in higher pressures
C. Petrol engines work on Otto cycle
D. All of the above
9.Which of the following does not relate to a spark ignition engine?
A. Ignition coil
B. Spark plug
C. Carburettor
D. Fuel injector
10.In a four stroke cycle engine, the sequence of operations is
A. Suction, compression, expansion and exhaust
B. Suction, expansion, compression and exhaust
C. Expansion, compression, suction and exhaust
D.Compression, expansion, suction and exhaust
11.The ratio of work-done per cycle to the stroke volume of the compressor is known as…….
A. Compressor capacity
B.Compression ratio
C. Compressor efficiency
D. Mean effective pressure
12.The capacity of a compression is 10 m3/minute.10 m 3/minute refers to…….
A. Standard air
B. Free air
C. Compressed air
D. Compressed air at delivery pressure
13.Aeroplanes employe following type of compressor………
A. Radial flow
B.Axial flow
C.Centrifugal
D.Combination of above
14.The multi stage compression as compared to single stage compression
A. Improves volumetric efficiency for the given pressure ratio
B. Reduces work done per kg of air
C. Reduces cost of compressor
D. Gives more uniform torque
E.All of the above
15.Mining industry usually employs following motive power…….
A. AC electric motor
B. Compressed air
C. Petrol engine
D. Diesel engine
16.The rotary compressors are used for delivering…….
A. Small quantities of air at high-pressure
B. Large quantities of air at high-pressure
C. Small quantities of air at low pressures
D. Large quantities of air at a low pressures
17.The maximum delivery pressure in a rotary air compression is…….
A. 10 bar
B. 20 bar
C. 30 bar
D. 40 bar
18.The speed of the rotary compressor is…….as compared to reciprocating air compressor
A. High
B. Low
C. Equal
D. None of the above
19.The capacity of compression will be highest when it’s intake temperature is……
A. Lowest
B. Highest
C. Anything atmospheric
D. None of the above
20.Reciprocating air compressor is best suited for……
A. Large quantity of air at high pressure
B. Small quantity of air at high pressure
C. Small quantity of air at low pressure
D. Large quantity of air at low pressure
21. Compression ratio of I.C. engine is
A.the ratio of volumes of air in cylinder before compression stroke and after
compression stroke.
B. volume displaced by piston per stroke and clearance volume in cylinder
C. ratio of pressure after compression and before compression
D. swept volume/cylinder volume
22.If the temperature of intake air in internal combustion engine increases, then its efficiency will
A. Remain same B.Decrease C. Increase D. None of these
23.The operation of forcing additional air under pressure in the engine cylinder is known as
A. Scavenging B.Turbulence C.Supercharging D. Pre-ignition
24.The ignition quality of petrol is expressed by
A. Cetane number B. Octane number C. Calorific value D. All of these
25.The probability of knocking in diesel engines is increased by
A. High self ignition temperature B.Low volatility C. Higher viscosity D. All of these
26.The knocking in spark ignition engines can be reduced by
A. Retarding the spark B. Increasing the engine speed C. Both (A) and (B) D.None of these
27.Which of the following statement is correct?
A. Compression ratio for petrol engines varies from 6 to 10
B. Higher compression ratio in diesel engines results in higher pressures
C. Petrol engines work on Otto cycle
D. All of the above
28.Which of the following does not relate to a spark ignition engine?
A. Ignition coil
B. Spark plug
C. Carburettor
D. Fuel injector
29.In a four stroke cycle engine, the sequence of operations is
A. Suction, compression, expansion and exhaust
B. Suction, expansion, compression and exhaust
C. Expansion, compression, suction and exhaust
Compression, expansion, suction and exhaust
30.The ratio of work-done per cycle to the stroke volume of the compressor is
known as…….
A. Compressor capacity
B.Compression ratio
C. Compressor efficiency
D. Mean effective pressure
31.The capacity of a compression is 10 m3/minute.10 m 3/minute refers to…….
A. Standard air
B. Free air
C. Compressed air
D. Compressed air at delivery pressure
32.Aeroplanes employe following type of compressor………
A. Radial flow
B.Axial flow
C.Centrifugal
D.Combination of above
33.The multi stage compression as compared to single stage compression……
A. Improves volumetric efficiency for the given pressure ratio
B. Reduces work done per kg of air
C. Reduces cost of compressor
D. Gives more uniform torque
E.All of the above
34.Mining industry usually employs following motive power…….
A. AC electric motor
B. Compressed air
C. Petrol engine
D. Diesel engine
35.The rotary compressors are used for delivering…….
A. Small quantities of air at high-pressure
B. Large quantities of air at high-pressure
C. Small quantities of air at low pressures
D. Large quantities of air at a low pressures
36.The maximum delivery pressure in a rotary air compression is…….
A. 10 bar
B. 20 bar
C. 30 bar
D. 40 bar
37.The speed of the rotary compressor is…….as compared to reciprocating air
compressor
A. High
B. Low
C. Equal
D. None of the above
38.The capacity of compression will be highest when it’s intake temperature is……
A. Lowest
B. Highest
C. Anything atmospheric
D. None of the above
39.Reciprocating air compressor is best suited for……
A. Large quantity of air at high pressure
B. Small quantity of air at high pressure
C. Small quantity of air at low pressure
D. Large quantity of air at low pressure
