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- Question
The loud pulsating noise heard within the cylinder of an internal combustion engine is known as
Options- A. detonation
- B. turbulence
- C. pre-ignition
- D. supercharging
- Correct Answer
- detonation
- 1. A power plant giving least running cost of production of electrical power is
Options- A. steam power plant
- B. gas turbine power plant
- C. hydro electric power plant
- D. nuclear power plant Discuss
- 2. In diesel engines, the ignition takes place due to the heat produced in the engine cylinder at the end of compression.
Options- A. Correct
- B. Incorrect Discuss
- 3. A nuclear reactor is said to be critical when the neutron population in the reactor core is
Options- A. rapidly increasing leading to the point of explosion
- B. decreasing from the specified value
- C. reduced to zero
- D. constant Discuss
- 4. The ignition of the charge by some hot surface within the engine before the passage of spark is called
Options- A. pre-ignition
- B. detonation
- C. ignition delay
- D. auto-ignition Discuss
- 5. If the compression ratio in I.C. engine increases, then its thermal efficiency will
Options- A. decrease
- B. increase
- C. remain same Discuss
- 6. The slowing down of fast neutrons is desirable because slow moving neutrons are more effective than fast neutrons in triggering fission.
Options- A. Agree
- B. Disagree Discuss
- 7. The brake power (B.P.) of the engine is given by (where W = Brake load or dead load in newtons, l = Length of arm in metres, N = Speed of engine in r.p.m., S - Spring balance reading in newtons, D = Dia. of brake drum in metres, and d = Dia. of rope in metres)
Options- A.
- B.
- C.
- D. all of these Discuss
- 8. A supercharged engine as compared to an ordinary engine
Options- A. is lighter
- B. requires smaller foundations
- C. consumes less lubricating oil
- D. all of these Discuss
- 9. The fuels in order of decreasing knock tendency for spark ignition engines are
Options- A. paraffins, aromatics, napthenes
- B. paraffins, napthenes, aromatics
- C. napthenes, aromatics, paraffins
- D. napthenes, paraffins, aromatics Discuss
- 10. Thermal efficiency of a two stroke cycle engine is __________ a four stroke cycle engine.
Options- A. equal to
- B. less than
- C. greater than Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: nuclear power plant
Correct Answer: Correct
Correct Answer: constant
Correct Answer: pre-ignition
Correct Answer: increase
Correct Answer: Agree
Correct Answer: all of these
Correct Answer: all of these
Correct Answer: paraffins, napthenes, aromatics
Correct Answer: less than
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