# Automobile Engineering MCQ Practice – Set 13 :: Mechanical Engineering

Are you guys looking for Mechanical Engineering MCQ Questions with Answers PDF Free Download as per Mechanical Engineering new exam pattern? You came to the right page. This may assist you to understand and check your knowledge about the Subjects. Students also can take a free test of the Multiple Choice Questions of Mechanical Engineering. Each question has four options followed by the right answer. These Mechanical Engineering MCQ Questions are selected supported by the newest exam pattern.

## Q1. A three way catalytic converter

(A) Re-circulates exhaust gases
(B) Burns fuel vapour gases
(C) Reduces N₂, H₂O, and CO₂ emission levels
(D) Removes CO, HC, and NO₂ from the exhaust gases passing through it

Answer: (D) Removes CO, HC, and NO₂ from the exhaust gases passing through it

## Q2. The correct way to rectify an imbalanced wheel is to

(B) Rotate the tyres
(C) Adjust the damper spring tension
(D) Attach appropriate weights to the wheel at appropriate positions

Answer: (D) Attach appropriate weights to the wheel at appropriate positions

## Q3. Wheel base of a vehicle is the

(A) Distance between the centres of the front and rear wheels
(B) Distance between the centres of the front tyres
(C) Distance between the centres of the rear tyres
(D) Extreme length of the vehicle

Answer: (A) Distance between the centres of the front and rear wheels

## Q4. The function of a governor in automobiles is to

(A) Limit the power
(B) Limit the vehicle speed
(C) Maintain constant engine speed
(D) Maximise the fuel economy

## Q5. The basic part of the engine, to which the other engine parts are attached or assembled is the

(B) Crankshaft
(C) Cylinder block
(D) Oil pan

## Q6. An overinflated tyre will wear the tread most near the

(A) Edges
(B) Corners
(C) Centre
(D) None of these

## Q7. In a four speed four stroke Diesel engine, the intake valve

(A) Opens at T.D.C. and closes at B.D.C.
(B) Opens at 20° before T.D.C. and closes at 35° after B.D.C.
(C) Opens at 10° after T.D.C. and closes at 20° before B.D.C.
(D) None of the above

Answer: (B) Opens at 20° before T.D.C. and closes at 35° after B.D.C.

## Q8. What type of bearing is used for main bearings and connecting rod bearings?

(A) Ball bearings
(B) Plain bearings
(C) Needle roller bearing
(D) Taper roller bearing

(A) 1
(B) 2
(C) 3
(D) 4

## Q10. The fuel pump in the programmed fuel injection (PFI) system is located

(A) Between the fuel filler pipe and fuel tank
(B) In the fuel tank
(C) On the distributor mounting in the engine compartment
(D) On the engine compartment bulkhead

Answer: (B) In the fuel tank

(A) N-heptane
(B) Iso-octane
(C) Benzene
(D) Alcohol

(A) SAE 30
(B) SAE 40
(C) SAE 70
(D) SAE 80

(A) 1-2-3-4
(B) 1-3-4-2
(C) 1-2-4-3
(D) 1-3-2-4

## Q14. The function of a connecting rod is

(A) To turn the flywheel
(B) To drive the drive plate
(C) To drive the fuel pump
(D) To transmit motion of the piston to the crankshaft

Answer: (D) To transmit motion of the piston to the crankshaft

(A) 36.5 MJ/kg
(B) 38.5 MJ/kg
(C) 42.5 MJ/kg
(D) 45.5 MJ/kg

## Q16. When the top of the wheel is tilted outward, then it is called

(A) Positive camber
(B) Negative camber
(C) Positive caster
(D) Negative caster

## Q17. Valve overlap is the number of degrees of camshaft rotation during which

(A) Both valves are closed
(B) Both valves are open
(C) Both ‘A’ and ‘B’
(D) None of these

Answer: (B) Both valves are open

(A) 1.143 N
(B) 11.43 N
(C) 114.3 N
(D) 1143 N

## Q19. The basic purpose of tyre rotation on automobiles is to

(A) Avoid ply separation
(B) Equalize wear
(C) Get better ride
(D) None of these