Explore topic-wise MCQs in Ic Engine.

This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Ic Engine knowledge and support exam preparation. Choose a topic below to get started.

1.

The loss in piston work due to the early opening of the exhaust valve is less than offset by better charging and scavenging of the engine.

A. True
B. False
Answer» C.
2.

The power developed by the turbocharger is not sufficient to drive the compressor, and overcome its mechanical friction.

A. True
B. False
Answer» C.
3.

The ignition must be retarded at high intake pressure and temperature.

A. True
B. False
Answer» B. False
4.

THE_POWER_DEVELOPED_BY_THE_TURBOCHARGER_IS_NOT_SUFFICIENT_TO_DRIVE_THE_COMPRESSOR,_AND_OVERCOME_ITS_MECHANICAL_FRICTION.?$

A. True
B. False
Answer» C.
5.

The_loss_in_piston_work_due_to_early_opening_of_the_exhaust_valve_is_less_than_offset_by_better_charging_and_scavenging_of_the_engine.$

A. True
B. False
Answer» C.
6.

The ignition must be retarded at high intake pressure and temperature?

A. True
B. False
Answer» B. False
7.

The ignition timings and thermal load on the engine affect the knock limit of CI engine.

A. True
B. False
Answer» C.
8.

Rich mixtures are used to control detonation, which further increases the specific fuel consumption of the engine.

A. True
B. False
Answer» B. False
9.

The increased flame speeds make the petrol engine more sensitive to fuel-air ratio and engine cannot run on strong mixtures without knock.

A. True
B. False
Answer» C.
10.

Increased intake pressure and temperature reduces ignition delay and decreases flame speed.

A. True
B. False
Answer» C.
11.

The supercharged petrol engines have a lower fuel consumption than naturally aspirated engines.

A. True
B. False
Answer» C.
12.

____________ in supercharging pressure increases the tendency to detonate and pre-ignite.

A. Decrease
B. Increase
C. Unpredictable
D. None of the mentioned
Answer» B. Increase
13.

Supercharging of S.I engines is employed only for aircraft and racing car engines.

A. True
B. False
Answer» B. False