Most high speed compression engines operate on __________________?

Related Mcqs:

1. Most high speed compression engines operate on ___________________?

   A. Otto cycle
   B. Diesel cycle
   C. Dual cycle
   D. Carnot cycle
   E. Two stroke cycle

2. Diesel engines as compared to petrol engines require ______________________?

   A. bigger flywheel
   B. smaller flywheel
   C. same size flywheel
   D. no flywheel
   E. flywheel whose size may be less or more depending on several other fac-tors

3. Compression ratio of LC. engines 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
   E. cylinder volume/swept volume

4. Combustion in compression ignition engines is____________________?

   A. homogeneous
   B. heterogeneous
   C. both A. and B.
   D. laminar
   E. turbulent

5. Compression loss in I.C engines occurs due to_________________?

   A. leaking piston rings
   B. use of thick head gasket
   C. clogged air-inlet slots
   D. increase in clearance volume caused b bearing-bushing wear
   E. all of the above

6. An engine has a normal speed of 960 r.p.m. and no load speed of 1000 r.p.m. The speed droop of governor will be about___________________?

   A. 2%
   B. 4%
   C. 8%
   D. ±4%
   E. 1%.

7. For low speed operation or for idling in petrol engines, the engine requirements are for_______________?

   A. lean mixture
   B. theoretically correct mixture
   C. rich mixture
   D. any type of mixture
   E. lean/rich mixture depending upon capacity of engine

8. 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

9. In petrol engines, the maximum power is developed corresponding to relative fuel air ratio of________________?

   A. 0.85
   B. 1
   C. 1.1 to 1.3
   D. 1.2 to 1.5

10. The ignition coil in diesel engines produces voltage of the order of________________?

    A. 6 to 12 volts
    B. 240 volts
    C. 1000 volts
    D. 20,000 volts
    E. 80,000 volts