Explore topic-wise MCQs in Engineering.

This section includes 4791 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.

4751.

In a ventilated disc brake,

A. a duct directs air towards the caliper for cooling while the vehicle is moving
B. caliper is covered with cooling fins
C. disc contains many small holes for optimum cooling performance
D. disc contains radial vanes between its rubbing surfaces for optimum cooling performance
Answer» E.
4752.

The effect of having excess camber is

A. excessive steering alignment torque
B. hard steering
C. too much traction
D. uneven tyre wear
Answer» E.
4753.

The co-efficient of rolling resistance for a truck weighing 63 500 N is 0.018. The rolling resistance to the truck is

A. 1.143 N
B. 11.43 N
C. 114.3 N
D. 1143 N
Answer» E.
4754.

The advantage of double-wishbone suspension design is that a large amount of freedom is available for setting geometry and precise settings can be made for driving comfort and steerability,

A. Correct
B. Incorrect
Answer» B. Incorrect
4755.

If the level of tension in the belt is too high, it can result in a loss of power or in bending of the rotating shaft or crankshaft.

A. Correct
B. Incorrect
Answer» B. Incorrect
4756.

If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is called

A. detonation
B. ignition
C. pre-ignition
D. rumble
Answer» D. rumble
4757.

The oil pump is driven by the

A. camshaft
B. alternator shaft
C. crankshaft via drive belt
D. crankshaft directly
Answer» E.
4758.

In a spark plug, when the temperature of the central electrode exceeds a certain temperature, any carbon that has adhered will be burnt off, and the temperature at which this burning off carbon starts is referred to as the self cleaning temperature.

A. Correct
B. Incorrect
Answer» B. Incorrect
4759.

Incorrect steering axis inclination (S.A.I.) causes

A. tendency to assume toe-out orientation
B. generation of a braking effect at tight corners
C. poor recovery of the steering wheel after making a turn
D. the vehicle to pull to the side of lesser inclination
Answer» D. the vehicle to pull to the side of lesser inclination
4760.

In a unit type body (frameless body) design, the sheet metal parts are welded together, forming a frame work to which outer skin is attached.

A. True
B. False
Answer» B. False
4761.

The torque available at the contact between driving wheels and road is known as

A. brake effort
B. tractive effort
C. clutch effort
D. none of these
Answer» C. clutch effort
4762.

A traction control system (TCS) in automobiles controls the

A. vibrations on the steering wheel
B. engine power during acceleration
C. torque that is transmitted by the tyres to the road surface
D. stopping distance in case of emergency
Answer» D. stopping distance in case of emergency
4763.

In radial tyres

A. one ply layer runs diagonally one way and another layer runs diagonally the other way
B. all plies run parallel to one another and vertical to tyre bead
C. inner tubes are always used
D. none of these
Answer» C. inner tubes are always used
4764.

If the engine coolant leaks into the engine oil, then engine oil

A. appears milky
B. becomes foamy
C. turns black
D. none of these
Answer» B. becomes foamy
4765.

The function of an alternator in an automobile is to

A. supply electric power
B. convert mechanical energy into electrical energy
C. continually recharge the battery
D. partly convert engine power into electric power
Answer» D. partly convert engine power into electric power
4766.

A clutch is usually designed to transmit maximum torque which is

A. equal to the maximum engine torque
B. 80 per cent of the maximum engine torque
C. 150 per cent of the maximum engine torque
D. none of these
Answer» D. none of these
4767.

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

A. Ballbearings
B. Plain bearings
C. Needle roller bearing
D. Taper roller bearing
Answer» C. Needle roller bearing
4768.

It is necessary to maintain the valve clearances as they

A. reduce the resistance to sliding that occurs between the cam and the tappet
B. allow for lengthening of the valves owing to the heat of combustion
C. increase the speed at which the valves move up and down
D. make the crankshaft turn smoothly
Answer» C. increase the speed at which the valves move up and down
4769.

The vehicle ride will be comfortable if

A. unsprung mass is kept minimum
B. sprang mass is kept minimum
C. vehicle mass is kept minimum
D. all of these
Answer» B. sprang mass is kept minimum
4770.

The flywheel and the pressure plate bind the clutch disc between them so that the engine and the transmission can be engaged.

A. Yes
B. No
Answer» B. No
4771.

The main function of intake manifold is that it

A. promotes the mixture of air and fuel
B. reduces intake noise
C. cools the intake air to a suitable temperature
D. distributes intake air equally to the cylinders
Answer» E.
4772.

The difference between DOT 3 and DOT 4 brake fluids is

A. DOT 4 fluid has a higher boiling point than DOT 3 fluid
B. DOT 4 fluid has a lower boiling point than DOT 3 fluid
C. DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life
D. DOT 4 fluid is more resistant to freezing than DOT 3 fluid
Answer» B. DOT 4 fluid has a lower boiling point than DOT 3 fluid
4773.

The battery is an electrochemical device, which means battery

A. makes chemicals by mechanical means
B. uses chemical action to provide electricity
C. has curved plates instead of flat plates
D. does not use an electrolyte
Answer» C. has curved plates instead of flat plates
4774.

The operation of removing trapped air from the hydraulic braking system is known as

A. trapping
B. tapping
C. bleeding
D. cleaning
Answer» D. cleaning
4775.

Positive camber is used to compensate for wheels tilting inward due to the weight of the vehicle.

A. Yes
B. No
Answer» B. No
4776.

If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about

A. 17:1
B. 15:1
C. 13:1
D. 10:1
Answer» E.
4777.

The draft or taper allowance on casting is generally

A. 1 to 2 mm/m
B. 2 to 5 mm/m
C. 5 to 10 mm/m
D. 10 to 15 mm/m
Answer» B. 2 to 5 mm/m
4778.

Which of the following welding process uses non-consumable electrodes?

A. TIG welding
B. MIG welding
C. Manual arc welding
D. Submerged arc welding
Answer» B. MIG welding
4779.

In a bilateral system of tolerance, the tolerance is allowed on

A. one side of the actual size
B. one side of the nominal size
C. both sides of the actual size
D. both sides of the nominal size
Answer» E.
4780.

The blank diameter used in thread rolling will be

A. equal to minor diameter of the thread
B. equal to pitch diameter of the thread
C. a little larger than the minor diameter of the thread
D. a little larger than the pitch diameter of the thread
Answer» D. a little larger than the pitch diameter of the thread
4781.

The cross-section of a chisel is usually

A. rectangular
B. square
C. hexagonal
D. octagonal
Answer» E.
4782.

A plug gauge is used to check the diameter of shafts and studs.

A. Correct
B. Incorrect
Answer» C.
4783.

In back-hand welding, the angle between the welding torch and the work is kept as

A. 30 -40
B. 40 -50
C. 50 -60
D. 60 -70
Answer» C. 50 -60
4784.

The centrifugal casting method, is used for casting articles of

A. symmetrical shape about vertical axis
B. symmetrical shape about horizontal axis
C. irregular shape
D. non-ferrous metal only
Answer» C. irregular shape
4785.

The cold chisels are made by

A. drawing
B. rolling
C. piercing
D. forging
Answer» E.
4786.

The fullers are used

A. for finishing flat surfaces
B. for necking down a piece of work
C. for punching a hole
D. to finish the punched hole
Answer» C. for punching a hole
4787.

The property of sand due to which it evolves a great amount of steam and other gases is called

A. collapsibility
B. permeability
C. cohesiveness
D. adhesiveness
Answer» C. cohesiveness
4788.

A baffle plate is fitted inside the oil pan to prevent the oil from splashing when it is subjected to vibration and other movement during vehicle operation.

A. True
B. False
Answer» B. False
4789.

The motion of the cam is transferred to the valves through

A. pistons
B. rocker arms
C. camshaft pulley
D. valve stems
Answer» C. camshaft pulley
4790.

Which of the following symptom is caused as a result of brake disc run out ?

A. Ineffectiveness of the brakes
B. Judder during braking
C. Localized wearing of the brake pads
D. Rapid wearing of the brake pads
Answer» C. Localized wearing of the brake pads
4791.

A taper provided on the pattern for its easy and clean withdrawl from the mould is known as

A. machining allowance
B. draft allowance
C. shrinkage allowance
D. distortion allowance
Answer» C. shrinkage allowance