Supercharging is essential in_____________?

Related Mcqs:

1. Supercharging is the process of_____________________?

   A. supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
   B. providing forced cooling air
   C. injecting excess fuel for raising more load
   D. supplying compressed air to remove combustion products fully
   E. raising exhaust pressure

2. Pick up the wrong statement about supercharging __________________?

   A. supercharging reduces knocking in diesel engines
   B. there can be limited supercharging in petrol engines because of detonation
   C. supercharging at high altitudes is essential
   D. supercharging results in fuel economy
   E. supercharging is essential in aircraft engines

3. The reason for supercharging in any engine is to________________?

   A. increase efficiency
   B. increase power
   C. reduce weight and bulk for a given out-put
   D. effect fuel economy
   E. none of the above

4. The essential equipment for producing high vlotage for sparking in petrol engines with battery is_______________?

   A. ignition coil
   B. ignition coil and distributor
   C. ignition coil and condenser
   D. ignition coil and contact breaker
   E. ignition coil, contact breaker and con-denser

5. The rating of a diesel engine, with increase in airintlet temperature, will ___________________?

   A. increase linearly
   B. decrease linearly
   C. increase parabolically
   D. decrease parabolically
   E. first decrease linearly and then increase parabolically

6. Air fuel ratio for idling speed of a petrol engine is approximately_________________?

   A. 1 : 1
   B. 5 : 1
   C. 10:1
   D. 15 : 1
   E. 20 : 1

7. Kerosene is distilled at________________?

   A. 30 – 65°C
   B. 65 – 220°C
   C. 220 – 350°C
   D. 350 – 450°C
   E. 450-550°C

8. According to Recardo’s theory, detonation occurs due to______________________?

   A. instantaneous auto-ignition of last part of charge to be burnt
   B. improper mixing of air and fuel
   C. improper combustion
   D. self ignition temperature has nothing to do with detonation
   E. none of the above

9. The thermal efficiency of a two cycle engine as compared to four cycle engine is_________________?

   A. more
   B. less
   C. same
   D. more upto some load and then less
   E. it may be less or more depending on several other factors

10. The efficiency of the ideal diesel cycle is ________ than that of Otto cycle, for the same compression ratio

    A. Higher
    B. Lower
    C. Equal
    D. None of these

    Submitted by: Faheem Zaman Dhaunroo