Which of the following is correct? (Where p_a = Actual mean effective pressure, p_m = Theoretical mean effective pressure, and K = Diagram factor)

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Which of the following is correct? (Where p_a = Actual mean effective pressure, p_m = Theoretical mean effective pressure, and K = Diagram factor)

A. p_a = p_m/K

B. p_a = p_m × K

C. p_a = K/p_m

D. p_a = p_m + K

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The ratio of brake power to the indicated power is known as

A. Mechanical efficiency

B. Overall efficiency

C. Indicated thermal efficiency

D. Brake thermal efficiency

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Which of the following boilers is best suited to meet fluctuating demands?

A. Babcock and Wilcox

B. Locomotive

C. Lancashire

D. Cochran

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If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by

A. Throttling calorimeter

B. Separating calorimeter

C. Combined separating and throttling calorimeter

D. Bucket calorimeter

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For combustion of a fuel, following is essential

A. Correct fuel air ratio

B. Proper ignition temperature

C. O₂ to support combustion

D. All the three above

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The equivalent evaporation of a boiler is a measure to compare

A. The given boiler with the model

B. The two different boilers of the same make

C. Two different makes of boilers operating under the same operating conditions

D. Any type of boilers operating under any conditions

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When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as

A. Throttle governing

B. Cut-off governing

C. By-pass governing

D. None of these

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Steam engine operates on

A. Carnot cycle

B. Joule cycle

C. Stirling cycle

D. Brayton cycle

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The steam enters the nozzle at a

A. High pressure and a low velocity

B. High pressure and a high velocity

C. Low pressure and a low velocity

D. Low pressure and a high velocity

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During storage, the heating value of coal

A. Increases

B. Decreases

C. Remain constant

D. May increase or decrease depending upon the method of storage

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Desecration of feed water is carried out because it reduces

A. Cavitation of boiler feed pumps

B. Corrosion caused by oxygen

C. Heat transfer coefficient

D. pH value of water

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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

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The diameters of fire tubes and superheater tubes in locomotive boiler are

A. 47.5 mm, 130 mm

B. 32.5 mm, 180 mm

C. 65.5 mm, 210 mm

D. 24.5 mm, 65 mm

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A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the direction of the blade motion.

A. 60°

B. 90°

C. 180°

D. 270°

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De-Laval turbines are mostly used

A. Where low speeds are required

B. For small power purposes and low speeds

C. For large power purposes

D. For small power purposes and high speeds

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Stoichiometric quantity of air is the

A. Air present in atmosphere at NTP conditions

B. Air required for complete combustion of fuel with no excess air

C. Air required for optimum combustion so as to have reasonable excess air

D. Air required to convert CO into CO₂

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The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

A. Condenser efficiency

B. Vacuum efficiency

C. Nozzle efficiency

D. Boiler efficiency

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The water tubes in a simple vertical boiler are

A. Horizontal

B. Vertical

C. Inclined

D. None of these

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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

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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

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The length of shell of a Locomotive boiler is

A. 1 m

B. 2 m

C. 3 m

D. 4 m

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Carbonisation of coal is the process of

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. Binding the pulverised coal into briquettes

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A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.

A. Blow off cock

B. Fusible plug

C. Stop valve

D. Safety valve

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The ratio of heat utilised to produce steam and the heat liberated in furnace is known as

A. Boiler effectiveness

B. Boiler evaporative capacity

C. Factor of evaporation

D. Boiler efficiency

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Throttle 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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A valve installed between the boiler and the feed pump is

A. Blow off cock

B. Feed check valve

C. Steam stop valve

D. None of these

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Which of the following is correct? (Where p_a = Actual mean effective pressure, p_m = Theoretical mean effective pressure, and K = Diagram factor)

A. p_a = p_m/K

B. p_a = p_m × K

C. p_a = K/p_m

D. p_a = p_m + K

Discuss this answer

A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as

A. Blow off cock

B. Fusible plug

C. Superheater

D. Stop valve

Discuss this answer

The actual power generated in the engine cylinder is called

A. Indicated power

B. Brake power

C. Frictional power

D. None of these

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Pick up the wrong statement about water tube boiler in comparison to fire tube boilers

A. Former occupies less space for same power

B. Rate of steam flow is more in former case

C. Former is used for high installed capacity

D. Chances of explosion are less in former case.

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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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Accepted Answer

B. p_a = p_m × K

Which of the following is correct? (Where p_a = Actual mean effective pressure, p_m = Theoretical mean effective pressure, and K = Diagram factor)

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

The ratio of brake power to the indicated power is known as

Which of the following boilers is best suited to meet fluctuating demands?

If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by

For combustion of a fuel, following is essential

The equivalent evaporation of a boiler is a measure to compare

When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as

Steam engine operates on

The steam enters the nozzle at a

During storage, the heating value of coal

Desecration of feed water is carried out because it reduces

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

The diameters of fire tubes and superheater tubes in locomotive boiler are

A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the direction of the blade motion.

De-Laval turbines are mostly used

Stoichiometric quantity of air is the

The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

The water tubes in a simple vertical boiler are

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

The saturation temperature of steam with increase in pressure increases

The length of shell of a Locomotive boiler is

Carbonisation of coal is the process of

A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.

The ratio of heat utilised to produce steam and the heat liberated in furnace is known as

Throttle governing of steam engines is a method of controlling the engine output by varying

A valve installed between the boiler and the feed pump is

Which of the following is correct? (Where p_a = Actual mean effective pressure, p_m = Theoretical mean effective pressure, and K = Diagram factor)

A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as

The actual power generated in the engine cylinder is called

Pick up the wrong statement about water tube boiler in comparison to fire tube boilers

Locomotive boiler is of the following type

Also checkout

Which of the following is correct? (Where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

The ratio of brake power to the indicated power is known as

Which of the following boilers is best suited to meet fluctuating demands?

If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by

For combustion of a fuel, following is essential

The equivalent evaporation of a boiler is a measure to compare

When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as

Steam engine operates on

The steam enters the nozzle at a

During storage, the heating value of coal

Desecration of feed water is carried out because it reduces

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

The diameters of fire tubes and superheater tubes in locomotive boiler are

A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the direction of the blade motion.

De-Laval turbines are mostly used

Stoichiometric quantity of air is the

The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

The water tubes in a simple vertical boiler are

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

The saturation temperature of steam with increase in pressure increases

The length of shell of a Locomotive boiler is

Carbonisation of coal is the process of

A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.

The ratio of heat utilised to produce steam and the heat liberated in furnace is known as

Throttle governing of steam engines is a method of controlling the engine output by varying

A valve installed between the boiler and the feed pump is

Which of the following is correct? (Where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)

A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as

The actual power generated in the engine cylinder is called

Pick up the wrong statement about water tube boiler in comparison to fire tube boilers

Locomotive boiler is of the following type

Also checkout

Which of the following is correct? (Where p_a = Actual mean effective pressure, p_m = Theoretical mean effective pressure, and K = Diagram factor)

Which of the following is correct? (Where p_a = Actual mean effective pressure, p_m = Theoretical mean effective pressure, and K = Diagram factor)