Home
Current Affairs January 2024

What is the correct answer?

4

The actual power generated in the engine cylinder is called

A. Indicated power

B. Brake power

C. Frictional power

D. None of these

Correct Answer :

A. Indicated power


Related Questions

What is the correct answer?

4

In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of

A. 10 atmospheres

B. 20 atmospheres

C. 30 atmospheres

D. 40 atmospheres

What is the correct answer?

4

Which of the following boiler works on a forced circulation of water?

A. Lamont boiler

B. Benson boiler

C. Loeffler boiler

D. All of these

What is the correct answer?

4

A device used to increase the temperature of saturated steam without raising its pressure, is called

A. Blow off cock

B. Fusible plug

C. Superheater

D. Stop valve

What is the correct answer?

4

One kg of steam sample contains 0.8 kg dry steam; Its dryness fraction is

A. 0.2

B. 0.8

C. 1.0

D. 0.6

What is the correct answer?

4

The artificial draught is produced by

A. Steam jet

B. Centrifugal fan

C. Chimney

D. Both (A) and (B)

What is the correct answer?

4

Steam turbines may be classified according to

A. Direction of steam flow

B. Number of stages

C. Mode of steam action

D. All of these

What is the correct answer?

4

Steam exhaust from high pressure turbine is reheated in

A. Boiler drums

B. Superheater tubes

C. Economiser

D. A separate coil located in convection path.

What is the correct answer?

4

The expansion of steam in a nozzle follows

A. Carnot cycle

B. Rankine cycle

C. Joule cycle

D. Stirling cycle

What is the correct answer?

4

The average operating pressure of Benson boiler is

A. 100 bar

B. 150 bar

C. 200 bar

D. 250 bar

What is the correct answer?

4

The clearance in the engine cylinder

A. Increases the mean effective pressure

B. Increases the workdone

C. Decreases the efficiency of the engine

D. All of these

What is the correct answer?

4

Pick up the wrong statement about critical condition of steam

A. Latent heat is zero

B. Liquid directly becomes steam

C. Specific volume of steam and liquid is same

D. This is the maximum pressure limit

What is the correct answer?

4

1 kg.m is equal to

A. 9.81 Joules

B. 102 Joules

C. 427 Joules

D. None of these

What is the correct answer?

4

The fire tubes in, a Coarran and Scottish marine boiler are

A. Horizontal

B. Vertical

C. Inclined

D. Both horizontal and vertical

What is the correct answer?

4

The saturation temperature of steam with increase in pressure increases

A. Linearly

B. Rapidly first and then slowly

C. Slowly first and then rapidly

D. Inversely

What is the correct answer?

4

The shell diameter and length of locomotive boiler are

A. 1.5 m, 4 m

B. 1.5 m, 6 m

C. 1 m, 4 m

D. 2 m, 4 m

What is the correct answer?

4

The value of diagram factor depends upon

A. Initial conditions of steam

B. Back pressure

C. Initial pressure of steam

D. All of these

What is the correct answer?

4

In a Woolf type compound engine, the high pressure and low pressure cylinders

A. Have common piston rod

B. Are set at 90°

C. Have separate piston rod

D. Are set in V-arrangement

What is the correct answer?

4

Coke is produced by

A. Pulverising coal in inert atmosphere

B. Heating wood in a limited supply of air at temperatures below 300°C

C. Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel

D. Enriching carbon in the coal

What is the correct answer?

4

In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine

A. Lancashire boiler

B. Locomotive boiler

C. Babcock and Wilcox boiler

D. Benson boiler

What is the correct answer?

4

The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.

A. Same

B. Less

C. More

D. None of these

What is the correct answer?

4

Film boiling occurs at

A. Very low pressure

B. Atmospheric pressures

C. Medium pressures

D. Very high pressures

What is the correct answer?

4

The ratio of heat equivalent to brake power to the energy supplied in steam is known as

A. Mechanical efficiency

B. Overall efficiency

C. Indicated thermal efficiency

D. Brake thermal efficiency

What is the correct answer?

4

In an ideal impulse turbine, the

A. Absolute velocity at the inlet of moving blade is equal to that at the outlet

B. Relative velocity at the inlet of the moving blade is equal to that at the outlet

C. Axial velocity at inlet is equal to that at the outlet

D. Whirl velocity at inlet is equal to that at the outlet

What is the correct answer?

4

The object of producing draught in a boiler is

A. To provide an adequate supply of air for the fuel combustion

B. To exhaust the gases of combustion from the combustion chamber

C. To discharge the gases of combustion to the atmosphere through the chimney

D. All of the above

What is the correct answer?

4

All steam engines work on

A. Zeroth law of thermodynamics

B. First law of thermodynamics

C. Second law of thermodynamics

D. None of these

What is the correct answer?

4

With increase in load, radiant superheater has

A. Drooping characteristic

B. Linear characteristic

C. Rising characteristic

D. Flat characteristic

What is the correct answer?

4

Pulverised fuel is used for

A. Better burning

B. More calorific value

C. Less radiation loss

D. Medium sized units

What is the correct answer?

4

In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is __________ the relative velocity of steam at inlet tip of the blade.

A. Equal to

B. Less than

C. Greater than

D. None of these

What is the correct answer?

4

Clearance ratio is the ratio of

A. Clearance volume to the swept volume

B. Clearance volume to the volume at cut-off

C. Volume at cut-off to the swept volume

D. Swept volume to the clearance volume

What is the correct answer?

4

Which of the following coals has the highest calorific value?

A. Anthracite coal

B. Bituminous coal

C. Lignite

D. Peat