The frictional power (F.P.) is given by

Question

The frictional power (F.P.) is given by

A. F.P. = B.P. - I.P.

B. F.P. = I.P. - B.P.

C. F.P. = B.P./I.P.

D. F.P. = I.P./B.P.

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If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the

A. Exhaust will be smoky

B. Piston rings would stick into piston grooves

C. Engine starts overheating

D. Scavenging occurs

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The firing order in an I.C. engine depends upon

A. Arrangement of the cylinders

B. Design of crankshaft

C. Number of cylinders

D. All of these

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The theoretically correct air fuel ratio for petrol engine is of the order of

A. 6 : 1

B. 9 : 1

C. 12 : 1

D. 15 : 1

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The pressure and temperature at the end of compression stroke in a petrol engine are of the order of

A. 4-6 kg/cm² and 200-250°C

B. 6-12 kg/cm² and 250-350°C

C. 12-20 kg/cm² and 350-450°C

D. 20-30 kg/cm² and 450-500°C

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If V₁ is the jet velocity and V₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is

A. V₁/(V₀ + V₁)

B. V₀/(V₀ + V₁)

C. 2V₀/(V₀ + V₁)

D. 2V₁/(V₀ + V₁)

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The fuel in diesel engine is normally injected at pressure of

A. 5-10 kg/cm²

B. 20-25 kg/cm²

C. 60-80 kg/cm²

D. 90-130 kg/cm²

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The _________ engines can work on very lean mixture of fuel.

A. Spark ignition

B. Compression ignition

C. Both (A) and (B)

D. None of these

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The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of

A. 0

B. 50

C. 100

D. 120

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The maximum temperature in the I.C. engine cylinder is of the order of

A. 500-1000°C

B. 1000-1500°C

C. 1500-2000°C

D. 2000-2500°C

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The pressure at the end of compression, in diesel engines, is approximately

A. 10 bar

B. 20 bar

C. 25 bar

D. 35 bar

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The air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is

A. More

B. Less

C. Same

D. May be more or less depending on engine capacity

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A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.

A. Half

B. Same

C. Double

D. Four times

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Which of the following is not an interns combustion engine?

A. 2-stroke petrol engine

B. 4-stroke petrol engine

C. Diesel engine

D. Steam turbine

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The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called

A. Mechanical efficiency

B. Overall efficiency

C. Volumetric efficiency

D. Relative efficiency

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In a four stroke cycle petrol engine, the expansion

A. Starts at top dead centre and ends at bottom dead centre

B. Starts at 30° before top dead centre and ends at 50° before bottom dead centre

C. Starts at 30° after top dead centre and ends at 50° after bottom dead centre

D. May start and end anywhere

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In diesel engine, the compression ratio in comparison to expansion ratio is

A. Same

B. Less

C. More

D. Variable

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Which of the following medium is compressed in a Diesel engine cylinder?

A. Air alone

B. Air and fuel

C. Air and lub oil

D. Fuel alone

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The function of a distributor in a coil ignition system of I.C. engines is

A. To distribute spark

B. To distribute power

C. To distribute current

D. To time the spark

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The air-fuel ratio of the petrol engine is controlled by

A. Carburettor

B. Injector

C. Governor

D. None of these

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Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged?

A. Yes

B. No

C. To some extent

D. Unpredictable

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Installation of supercharger on a four cycle diesel engine can result in the following percentage increase in power

A. Up to 35%

B. Up to 50%

C. Up to 75%

D. Up to 100%

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The inlet valve of a four stroke cycle internal combustion engine remains open for

A. 130°

B. 180°

C. 230°

D. 270°

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It the temperature of intake air in IC engines is lowered, then its efficiency will

A. Increase

B. Decrease

C. Remain same

D. Increase up to certain limit and then decrease

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The octane number of petrol, generally available, is

A. 20 to 40

B. 40 to 60

C. 60 to 80

D. 80 to 100

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When crude oil is heated, then which of the following hydrocarbon is given off first?

A. Kerosene

B. Gasoline

C. Paraffin

D. Natural gas

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The sensing element in the control system of nuclear reactors measures the _________ of the neutron flux in the reactor.

A. Temperature

B. Volume

C. Density

D. None of these

Discuss this answer

A stoichiometric air-fuel ratio is

A. Chemically correct mixture

B. Lean mixture

C. Rich mixture for idling

D. Rich mixture for over loads

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In a four stroke cycle petrol engine, the compression

A. Starts at 40° after bottom dead centre and ends at 30° before top dead centre

B. Starts at 40° before bottom dead centre and ends at 30° after bottom dead centre

C. Starts at bottom dead centre and ends at top dead centre

D. May start and end anywhere

Discuss this answer

In the crankcase method of scavenging, the air pressure is produced by

A. Supercharger

B. Centrifugal pump

C. Natural aspirator

D. Movement of engine piston

Discuss this answer

Iso-octane (C₈H₁₈) has octane number of

A. 0

B. 50

C. 100

D. 120

Discuss this answer

Accepted Answer

B. F.P. = I.P. - B.P.

The frictional power (F.P.) is given by

Correct Answer :

Show all Internal Combustion MCQ

Related Questions

If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the

The firing order in an I.C. engine depends upon

The theoretically correct air fuel ratio for petrol engine is of the order of

The pressure and temperature at the end of compression stroke in a petrol engine are of the order of

If V₁ is the jet velocity and V₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is

The fuel in diesel engine is normally injected at pressure of

The _________ engines can work on very lean mixture of fuel.

The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of

The maximum temperature in the I.C. engine cylinder is of the order of

The pressure at the end of compression, in diesel engines, is approximately

The air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is

A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.

Which of the following is not an interns combustion engine?

The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called

In a four stroke cycle petrol engine, the expansion

In diesel engine, the compression ratio in comparison to expansion ratio is

Which of the following medium is compressed in a Diesel engine cylinder?

The function of a distributor in a coil ignition system of I.C. engines is

The air-fuel ratio of the petrol engine is controlled by

Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged?

Installation of supercharger on a four cycle diesel engine can result in the following percentage increase in power

The inlet valve of a four stroke cycle internal combustion engine remains open for

It the temperature of intake air in IC engines is lowered, then its efficiency will

The octane number of petrol, generally available, is

When crude oil is heated, then which of the following hydrocarbon is given off first?

The sensing element in the control system of nuclear reactors measures the _________ of the neutron flux in the reactor.

A stoichiometric air-fuel ratio is

In a four stroke cycle petrol engine, the compression

In the crankcase method of scavenging, the air pressure is produced by

Iso-octane (C₈H₁₈) has octane number of

Also checkout

The frictional power (F.P.) is given by

Correct Answer :

Show all Internal Combustion MCQ

Related Questions

If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the

The firing order in an I.C. engine depends upon

The theoretically correct air fuel ratio for petrol engine is of the order of

The pressure and temperature at the end of compression stroke in a petrol engine are of the order of

If V₁ is the jet velocity and V₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is

The fuel in diesel engine is normally injected at pressure of

The _________ engines can work on very lean mixture of fuel.

The cetane (C16H34) which is a straight chain paraffin, is assigned a cetane number of

The maximum temperature in the I.C. engine cylinder is of the order of

The pressure at the end of compression, in diesel engines, is approximately

The air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is

A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.

Which of the following is not an interns combustion engine?

The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called

In a four stroke cycle petrol engine, the expansion

In diesel engine, the compression ratio in comparison to expansion ratio is

Which of the following medium is compressed in a Diesel engine cylinder?

The function of a distributor in a coil ignition system of I.C. engines is

The air-fuel ratio of the petrol engine is controlled by

Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged?

Installation of supercharger on a four cycle diesel engine can result in the following percentage increase in power

The inlet valve of a four stroke cycle internal combustion engine remains open for

It the temperature of intake air in IC engines is lowered, then its efficiency will

The octane number of petrol, generally available, is

When crude oil is heated, then which of the following hydrocarbon is given off first?

The sensing element in the control system of nuclear reactors measures the _________ of the neutron flux in the reactor.

A stoichiometric air-fuel ratio is

In a four stroke cycle petrol engine, the compression

In the crankcase method of scavenging, the air pressure is produced by

Iso-octane (C8H18) has octane number of

Also checkout

The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of

Iso-octane (C₈H₁₈) has octane number of