For the same power developed in I.C. engines, the cheaper system is_____________? - PakMcqs

Related Mcqs:

1. 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...

2. 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...

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. All heat engines utilize_____________________?

   A. low heat value of oil B. high heat value of oil C. net claorific value of oil D. calorific value of fuel E. all of the above...

5. Crankcase explosion in I.C. engines usuall occurs as ___________________?

   A. first a mild explosion followed by a bi explosion B. first a big explosion followed by a mil explosion C. both mild and big explosions occi simultaneously D. never occurs E. unpredictable...

6. Combustion in compression ignition engines is____________________?

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

7. To reduce the possibility of knock in the C.I. engines, the first elements of fuel and air should have_______________?

   A. high temperature B. high density C. short delay D. reactive mixture E. all of the above...

8. In order to prevent knock in the S.I. engines, the charge away from the spark plug should have___________________?

   A. low temperature B. low density C. long ignition delay D. rich mixture E. all of the above...

9. The knocking in diesel engines for given fuel, will be__________________?

   A. enhanced by increasing compression ratio B. enhanced by decreasing compression ratio C. unaflected by compression ratio D. first enhanced by increasig compression ratio upto a limit beyond which it will be suppressed E. dependent on other factors...

10. 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...