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4

The calorific value of Diesel is about

A. 36.5 MJ/kg

B. 38.5 MJ/kg

C. 42.5 MJ/kg

D. 45.5 MJ/kg

Correct Answer :

C. 42.5 MJ/kg


Related Questions

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4

The process of supplying the intake air to the engine cylinder at a pressure greater than the pressure of the surrounding atmosphere is known as

A. Supercharging

B. Auto ignition

C. Scavenging

D. Detonation

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4

The characteristic that is enhanced by the honing of cylinder sleeves inner surface is

A. Cooling efficiency

B. Resistance to wear

C. Lubrication performance

D. None of these

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4

The cetane rating of Diesel fuel is in the order of

A. 25

B. 45

C. 70

D. 90

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4

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

A. 17 : 1

B. 15 : 1

C. 13 : 1

D. 10 : 1

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4

The cetane number of a Diesel fuel is a measure of

A. Volatility

B. Viscosity

C. Ignition quality

D. Delay period

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4

The valve overlap in four stroke petrol engines is approximately

A. 30°

B. 60°

C. 90°

D. 120°

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4

The correct flow of power through the drive train is

A. Engine drive shafts, clutch, main shaft, counter shaft, final driven gear, wheels

B. Engine clutch, main shaft, counter shaft, final driven gear, drive shafts, wheels

C. Engine clutch, counter shaft, main shaft, final driven gear, drive shafts, wheels

D. Engine main shaft, counter shaft, clutch, final driven gear, drive shafts, wheels

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4

The crankshaft of a typical inline four cylinder engine has ________ balance weights.

A. 12

B. 4

C. 16

D. 8

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4

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

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4

The starter motor is driven by

A. Chain drive

B. Gear drive

C. Flat belt drive

D. V-belt drive

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4

Which of the following oil is more viscous?

A. SAE 30

B. SAE 40

C. SAE 70

D. SAE 80

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4

The function of positive crankcase ventilation (PCV) system is that it

A. Mixes fuel with air

B. Promotes combustion by creating a swirling movement in the air-fuel mixture

C. Returns blow by gases from the crankcase to the intake system

D. Feeds blow by gases to the exhaust manifold

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4

A laminated glass upon cracking

A. Bursts into sharp edged fragments

B. Bursts into granular pieces

C. Sandwiched layer traps the fragments

D. Breaks into the form of crystals

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4

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

A. Trapping

B. Tapping

C. Bleeding

D. Cleaning

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4

The engine oil level should be checked

A. Immediately after the ignition switch is turned off

B. While the engine is running

C. A few minutes after the ignition switch is turned off

D. While the engine is running at high idle speed

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4

A front stabilizer bar is used to

A. Increase vehicle load carrying capacity

B. Provide a softer ride

C. Control suspension movement and body roll

D. All of the above

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4

The compression ratio for Diesel engines usually lies in the range of

A. 6-10

B. 10-1

C. 15-25

D. 25-40

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4

The instrument used to check specific gravity of acid in a battery is

A. Hydrometer

B. Hygrometer

C. Anemometer

D. Multimeter

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4

The coefficient 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

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4

The three basic cylinder arrangements for automotive engines are

A. Flat, radial, and V

B. In a row, in line, and opposed

C. In line, V, and opposed

D. V, double row, and opposed

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4

The natural gas is compressed in a CNG cylinder at a pressure of

A. 200 bar

B. 220 bar

C. 250 bar

D. 300 bar

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4

The component that connects the steering rack to the knuckles is

A. Tie rod

B. Sector gear

C. Pivot

D. Spline

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4

The main task of a battery in automobiles is to

A. Supply electricity to the alternator

B. Act as a reservoir or stabilizer of electricity

C. Supply electricity to the vehicle's electrical system at all times while the engine is running

D. Supply a large amount of power to turn the starter motor when the engine is being started

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4

If a tyre is designated as 175/65 R-14 82-S, then the aspect ratio for the tyre is

A. 175

B. 65

C. 14

D. 82

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4

The specific gravity of acid in a fully charged battery is generally

A. 1.00

B. 1.28

C. 1.82

D. 2.81

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4

The main function of an exhaust muffler is the

A. Optimisation of exhaust efficiency

B. Reduction of exhaust noise

C. Reduction of nitrogen oxide in the exhaust gases

D. Reduction of the exhaust gas volume

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4

The ease with which petrol vaporizes is called its

A. Oxidation

B. Octane number

C. Volatility

D. Cetane number

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4

If the valve clearances are excessively large, the problem that can arise is

A. Overheating of the engine

B. Incomplete valve closure

C. Fouling of spark plug by gasoline

D. None of these

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4

The frequency of flashing of light per minute in a direction (side turn) indicator is about

A. 9

B. 90

C. 900

D. 9000

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4

How many cells are used in a 12 volt car battery?

A. 2

B. 4

C. 6

D. 8