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

Question

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

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The discharge is __________ at critical pressure.

A. Zero

B. Minimum

C. Maximum

D. None of these

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Cut-off governing of steam engines is a method of controlling the engine output by varying

A. Volume of intake steam

B. Pressure of intake steam

C. Temperature of intake steam

D. All of these

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The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is

A. More

B. Less

C. Same

D. Could be more or less depending on other factors

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The critical pressure ratio for initially dry saturated steam is

A. 0.546

B. 0.577

C. 0.582

D. 0.601

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Locomotive boiler is of the following type

A. Multi tubular

B. Horizontal

C. Internally fired

D. All of the above

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The fire tubes in a Locomotive boiler has _________ diameter.

A. 4.75 mm

B. 5.47 mm

C. 7.45 mm

D. 47.5 mm

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The function of a piston rod is

A. To guide motion of the piston rod and to prevent it from bending

B. To transfer motion from the piston to the cross head

C. To convert heat energy of the steam into mechanical work

D. To exhaust steam from the cylinder at proper moment

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The fire tubes in a Cochran boiler usually have _________ diameter.

A. 6.25 mm

B. 62.5 mm

C. 72.5 mm

D. 92.5 mm

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In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s and the blade velocity is 454 m/s. The power output in kW of steam will be

A. 260 kW

B. 282 kW

C. 296 kW

D. 302 kW

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For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be

A. One-half the height of chimney

B. Equal to the height of chimney

C. Two times the height of chimney

D. Four times the height of chimney

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An air preheater

A. Increases evaporative capacity of the boiler

B. Increases the efficiency of the boiler

C. Enables low grade fuel to be burnt

D. All of the above

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The dry saturated steam at very high pressure (150200 kg/cm²) when throttled to atmosphere will become

A. Wet

B. Superheated

C. Remain dry saturated

D. Dry

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A condenser where circulating water flows through tubes which are surrounded by steam, in known as

A. Surface condenser

B. Jet condenser

C. Barometric condenser

D. Evaporative condenser

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The high steam and low water safety valve is used to blow off steam when the

A. Steam pressure exceeds the working pressure

B. Water level in the boiler becomes too low

C. Both (A) and (B)

D. None of the above

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Heating wet steam at constant temperature is heating it at constant

A. Volume

B. Pressure

C. Entropy

D. Enthalpy

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Heating of dry steam above saturation temperature is known as

A. Enthalpy

B. Superheating

C. Super saturation

D. Latent heat

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Cut-off ratio is the ratio of

A. Swept volume to the volume at cut-off

B. Volume at cut-off to the clearance volume

C. Volume at cut-off to the swept volume

D. Clearance volume to the volume at cut-off

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There is always some steam left in the clearance space from the previous stroke. This steam left in the clearance space is called

A. Wet steam

B. Saturated steam

C. Superheated steam

D. Cushion steam

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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

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The diameter of cylindrical shell of the Lancashire boiler is of the order of

A. 1 to 1.25m

B. 1 to 1.75 m

C. 2 to 4 m

D. 1.75 to 2.75 m.

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The factor of evaporation for all boilers is always

A. Equal to unity

B. Less than unity

C. Greater than unity

D. None of these

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The selection of type and size of a steam boiler depends upon

A. The power required and working pressure

B. The geographical position of the power house

C. The fuel and water available

D. All of the above

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Benson boiler requires

A. No drum

B. One drum

C. Two drums

D. Three drums

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The biggest size of thermal power unit operating in India is

A. 30 MW

B. 60 MW

C. 100 MW

D. 500 MW

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The diameter of superheated tubes in a locomotive boiler is

A. 13 mm

B. 31 mm

C. 130 mm

D. 230 mm

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The variation of steam pressure in the nozzle depends upon

A. Velocity of steam

B. Specific volume of steam

C. Dryness fraction of steam

D. All of these

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The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure.

A. Equal to

B. Less than

C. Higher than

D. None of these

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Which of the following statement is wrong?

A. The mechanical draught reduces the height of chimney.

B. The natural draught reduces the fuel consumption.

C. A balanced draught is a combination of induced and forced draught.

D. All of the above

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1 kg.m is equal to

A. 9.81 Joules

B. 102 Joules

C. 427 Joules

D. None of these

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The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and h_d = Enthalpy or heat drop during expansion of steam in a nozzle)

A. V = 44.72 h_d K

B. V = 44.72 K h_d

C. V = 44.72 K h_d

D. V = 44.72 K h_d

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Accepted Answer

B. Locomotive boiler

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

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

The discharge is __________ at critical pressure.

Cut-off governing of steam engines is a method of controlling the engine output by varying

The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is

The critical pressure ratio for initially dry saturated steam is

Locomotive boiler is of the following type

The fire tubes in a Locomotive boiler has _________ diameter.

The function of a piston rod is

The fire tubes in a Cochran boiler usually have _________ diameter.

In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s and the blade velocity is 454 m/s. The power output in kW of steam will be

For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be

An air preheater

The dry saturated steam at very high pressure (150200 kg/cm²) when throttled to atmosphere will become

A condenser where circulating water flows through tubes which are surrounded by steam, in known as

The high steam and low water safety valve is used to blow off steam when the

Heating wet steam at constant temperature is heating it at constant

Heating of dry steam above saturation temperature is known as

Cut-off ratio is the ratio of

There is always some steam left in the clearance space from the previous stroke. This steam left in the clearance space is called

Steam turbines may be classified according to

The diameter of cylindrical shell of the Lancashire boiler is of the order of

The factor of evaporation for all boilers is always

The selection of type and size of a steam boiler depends upon

Benson boiler requires

The biggest size of thermal power unit operating in India is

The diameter of superheated tubes in a locomotive boiler is

The variation of steam pressure in the nozzle depends upon

The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure.

Which of the following statement is wrong?

1 kg.m is equal to

The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and h_d = Enthalpy or heat drop during expansion of steam in a nozzle)

Also checkout

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

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

The discharge is __________ at critical pressure.

Cut-off governing of steam engines is a method of controlling the engine output by varying

The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is

The critical pressure ratio for initially dry saturated steam is

Locomotive boiler is of the following type

The fire tubes in a Locomotive boiler has _________ diameter.

The function of a piston rod is

The fire tubes in a Cochran boiler usually have _________ diameter.

In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s and the blade velocity is 454 m/s. The power output in kW of steam will be

For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be

An air preheater

The dry saturated steam at very high pressure (150200 kg/cm²) when throttled to atmosphere will become

A condenser where circulating water flows through tubes which are surrounded by steam, in known as

The high steam and low water safety valve is used to blow off steam when the

Heating wet steam at constant temperature is heating it at constant

Heating of dry steam above saturation temperature is known as

Cut-off ratio is the ratio of

There is always some steam left in the clearance space from the previous stroke. This steam left in the clearance space is called

Steam turbines may be classified according to

The diameter of cylindrical shell of the Lancashire boiler is of the order of

The factor of evaporation for all boilers is always

The selection of type and size of a steam boiler depends upon

Benson boiler requires

The biggest size of thermal power unit operating in India is

The diameter of superheated tubes in a locomotive boiler is

The variation of steam pressure in the nozzle depends upon

The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure.

Which of the following statement is wrong?

1 kg.m is equal to

The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle)

Also checkout

The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and h_d = Enthalpy or heat drop during expansion of steam in a nozzle)