MCQOPTIONS
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MCQOPTIONS
This section includes 24 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which material is most commonly used for shielding? |
| A. | Carbon |
| B. | Concrete |
| C. | Lead |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 2. |
The specific fuel consumption per B.P. hour for a petrol engine is about __________ |
| A. | 0.2 kg |
| B. | 0.25 kg |
| C. | 0.3 kg |
| D. | 0.35 kg |
| Answer» C. 0.3 kg | |
| 3. |
The scavenging efficiency of a tour stroke cycle diesel engine is __________ |
| A. | between 50-85% |
| B. | between 95-100% |
| C. | below 50% |
| D. | between 85-95% |
| Answer» C. below 50% | |
| 4. |
How much voltage required to produce a spark across the gap, between the sparking points? |
| A. | 2000-4000 volts |
| B. | 4000-6000 volts |
| C. | 6000-10000 volts |
| D. | 10000-12000 volts |
| Answer» D. 10000-12000 volts | |
| 5. |
In petrol engines, the delay period is of the order of __________ |
| A. | 0.001 sec |
| B. | 0.002 sec |
| C. | 0.003 sec |
| D. | 0.004 sec |
| Answer» C. 0.003 sec | |
| 6. |
The two reference fuels used for cetane rating are __________ |
| A. | cetane & iso-octane |
| B. | cetane & normal heptane |
| C. | cetane & alpha methyl naphthalene |
| D. | cetane & tetra ethyl lead |
| Answer» D. cetane & tetra ethyl lead | |
| 7. |
The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to __________ |
| A. | inject fuel at a high velocity to facilitate atomisation |
| B. | inject fuel in a chamber of high pressure at the end of compression stroke |
| C. | ensure that penetration is not high |
| D. | all of the mentioned |
| Answer» E. | |
| 8. |
In order to eliminate knocking in compression ignition engines, there should be __________ |
| A. | high self-ignition temperature of fuel |
| B. | late auto-ignition |
| C. | short delay period |
| D. | low compression ratio |
| Answer» D. low compression ratio | |
| 9. |
If the speed of the engine is increased, the indicated power will __________ |
| A. | increase |
| B. | decrease |
| C. | remain same |
| D. | none of the mentioned |
| Answer» B. decrease | |
| 10. |
The pressure at the end of compression, in petrol engines, is approximately __________ |
| A. | 10 bar |
| B. | 20 bar |
| C. | 25 bar |
| D. | 35 bar |
| Answer» B. 20 bar | |
| 11. |
The control rods in the control system of nuclear reactors are used to __________ |
| A. | control fuel consumption |
| B. | absorb excess neutrons |
| C. | control temperature |
| D. | all of the mentioned |
| Answer» C. control temperature | |
| 12. |
A fuel of cetane number 40 has the same ignition quality as a mixture of __________ |
| A. | 40% alpha methyl napthalene and 60% cetane |
| B. | 40% cetane and 60% alpha methyl napthalene |
| C. | 40% petrol and 60% diesel |
| D. | 40% diesel and 60% petrol |
| Answer» C. 40% petrol and 60% diesel | |
| 13. |
In petrol engines, the delay period is of the order of$ |
| A. | 0.001 sec |
| B. | 0.002 sec |
| C. | 0.003 sec |
| D. | 0.004 sec |
| Answer» C. 0.003 sec | |
| 14. |
The two reference fuels used for cetane rating are$ |
| A. | cetane & iso-octane |
| B. | cetane & normal heptane |
| C. | cetane & alpha methyl naphthalene |
| D. | cetane & tetra ethyl lead |
| Answer» D. cetane & tetra ethyl lead | |
| 15. |
The material most commonly used for shielding is |
| A. | Carbon |
| B. | Concrete |
| C. | Lead |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 16. |
The scavenging efficiency of a tour stroke cycle diesel engine is |
| A. | between 50-85% |
| B. | between 95-100% |
| C. | below 50% |
| D. | between 85-95% |
| Answer» C. below 50% | |
| 17. |
The voltage required to produce a spark across the gap, between the sparking points is |
| A. | 2000-4000 volts |
| B. | 4000-6000 volts |
| C. | 6000-10000 volts |
| D. | 10000-12000 volts |
| Answer» D. 10000-12000 volts | |
| 18. |
In order to eliminate knocking in compression ignition engines, there should be |
| A. | high self-ignition temperature of fuel |
| B. | late auto-ignition |
| C. | short delay period |
| D. | low compression ratio |
| Answer» D. low compression ratio | |
| 19. |
Reflector in nuclear power plants __________ neutron leakage. |
| A. | increases |
| B. | decreases |
| C. | has no effect |
| D. | all of the mentioned |
| Answer» C. has no effect | |
| 20. |
Number of working strokes per min. for a two stroke cycle engine are __________ the speed of the engine in r.p.m. |
| A. | equal to |
| B. | one-half |
| C. | four-times |
| D. | twice |
| Answer» B. one-half | |
| 21. |
If the speed of the engine is increased, the indicated power will |
| A. | increase |
| B. | decrease |
| C. | remain same |
| D. | none of the mentioned |
| Answer» B. decrease | |
| 22. |
The pressure at the end of compression, in petrol engines, is approximately |
| A. | 10 bar |
| B. | 20 bar |
| C. | 25 bar |
| D. | 35 bar |
| Answer» B. 20 bar | |
| 23. |
The control rods in the control system of nuclear reactors are used to |
| A. | control fuel consumption |
| B. | absorb excess neutrons |
| C. | control temperature |
| D. | all of the mentioned |
| Answer» C. control temperature | |
| 24. |
A fuel of cetane number 40 has the same ignition quality as a mixture of |
| A. | 40% alpha methyl napthalene and 60% cetane |
| B. | 40% cetane and 60% alpha methyl napthalene |
| C. | 40% petrol and 60% diesel |
| D. | 40% diesel and 60% petrol |
| Answer» C. 40% petrol and 60% diesel | |