Explore topic-wise MCQs in Ic Engine.

This section includes 10 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 mechanical friction ___________ with increase in speed.

A. increases
B. reduces
C. unpredictable
D. none of the mentioned
Answer» B. reduces
Discussion
2.

Total friction is negligible compared to rolling friction.

A. True
B. False
Answer» C.
Discussion
3.

A circular cylindrical shaft called journal rotates against a cylindrical surface called the bearing.

A. True
B. False
Answer» B. False
Discussion
4.

Rolling friction coefficient is ____________ than journal bearing friction coefficient during starting and initial running of engine.

A. higher
B. lower
C. faster
D. none of the mentioned
Answer» C. faster
Discussion
5.

Ball and roller bearings and tappet rollers are subjected to rolling friction.

A. True
B. False
Answer» B. False
Discussion
6.

The ____________ friction is due to rolling motion between the two surfaces.

A. rolling
B. hydrodynamic friction
C. partial-film
D. none of the mentioned
Answer» B. hydrodynamic friction
Discussion
7.

During starting of the engine, the journal bearings operate in ____________ friction.

A. rolling
B. hydrodynamic friction
C. partial-film
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
8.

During normal engine operation there is almost no metallic contact except between the compression piston ring and cylinder walls.

A. True
B. False
Answer» B. False
Discussion
9.

In hydrodynamic friction, the friction force does not depends on the lubricant viscosity.

A. True
B. False
Answer» C.
Discussion
10.

The hydrodynamic friction is associated with the phenomena when a complete film of lubricant exists between the two bearing surfaces.

A. True
B. False
Answer» B. False
Discussion