For combustion of a fuel, following is essential

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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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Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

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The velocity of steam at throat of the nozzle is __________ the velocity of sound.

A. Equal to

B. Less than

C. More than

D. None of these

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In fire tube boilers

A. Water passes through the tubes which are surrounded by flames and hot gases

B. The flames and hot gases pass through the tubes which are surrounded by water

C. Forced circulation takes place

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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A steam nozzle converts

A. Heat energy of steam into kinetic energy

B. Kinetic energy into heat energy of steam

C. Heat energy of steam into potential energy

D. Potential energy into heat energy of steam

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

A. Have common piston rod

B. Are set at 90°

C. Have separate piston rods

D. Are set in V-arrangement

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Pick up the correct statement as regards Cornish boiler and Lancashire boiler

A. Cornish is fire tube and Lancashire is water tube

B. Cornish is water tube and Lancashire is fire tube

C. Cornish has two fire tubes and Lancashire has one

D. Lancashire has two fire tubes and Cornish has one

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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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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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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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Parson's reaction turbine is a __________ reaction turbine.

A. 40 percent

B. 50 percent

C. 60 percent

D. 70 percent

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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.

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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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Hygrometry deals with the

A. Hygroscopic substances

B. Water vapour in air

C. Temperature of air

D. Pressure of air

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Ultimate analysis of fuel is determination of percentage of

A. Carbon, hydrogen, nitrogen, sulphur, moisture

B. Fixed carbon, ash, volatile matter, moisture

C. Higher calorific value

D. Lower calorific value

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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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On Millier chart, the constant pressure lines

A. Diverge from left to right

B. Diverge from right to left

C. Are equally spaced throughout

D. First rise up and then fall

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The discharge is __________ at critical pressure.

A. Zero

B. Minimum

C. Maximum

D. None of these

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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 feed check valve is used in order to

A. Regulate flow of boiler water

B. Check level of water in boiler drum

C. Recirculate unwanted feed water

D. Allow high pressure feed water to flow to drum and not allow reverse flow to take place

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The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure)

A. p₁. p₂

B. p₁/p₂

C. p₂/p₁

D. p₁ + p₂

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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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Which of the following varieties of coals is mostly used in steam boilers?

A. Non-coking bituminous coal

B. Brown coal

C. Peat

D. None of the above

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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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The actual vacuum in a condenser is equal to

A. Barometric pressure + actual pressure

B. Barometric pressure - actual pressure

C. Gauge pressure + atmospheric pressure

D. Gauge pressure - atmospheric pressure

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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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The artificial draught is produced by

A. Steam jet

B. Centrifugal fan

C. Chimney

D. Both (A) and (B)

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Pour point of fuel oil is the

A. Lowest temperature at which oil will flow under set condition

B. Storage temperature

C. Temperature at which fuel is pumped through burners

D. Temperature at which oil is transported

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The difference of supersaturated temperature and saturation temperature at that pressure is called

A. Degree of super-saturation

B. Degree of superheat

C. Degree of under-cooling

D. None of these

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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 _________ 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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Accepted Answer

D. All the three above

For combustion of a fuel, following is essential

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

The velocity of steam at throat of the nozzle is __________ the velocity of sound.

In fire tube boilers

Steam engine operates on

A steam nozzle converts

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

Pick up the correct statement as regards Cornish boiler and Lancashire boiler

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

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

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

Parson's reaction turbine is a __________ reaction turbine.

Steam exhaust from high pressure turbine is reheated in

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

Hygrometry deals with the

Ultimate analysis of fuel is determination of percentage of

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

On Millier chart, the constant pressure lines

The discharge is __________ at critical pressure.

An air preheater

The feed check valve is used in order to

The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure)

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

Which of the following varieties of coals is mostly used in steam boilers?

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)

The actual vacuum in a condenser is equal to

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

The artificial draught is produced by

Pour point of fuel oil is the

The difference of supersaturated temperature and saturation temperature at that pressure is called

The water tubes in a simple vertical boiler are

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.

Also checkout

For combustion of a fuel, following is essential

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

The velocity of steam at throat of the nozzle is __________ the velocity of sound.

In fire tube boilers

Steam engine operates on

A steam nozzle converts

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

Pick up the correct statement as regards Cornish boiler and Lancashire boiler

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

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

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

Parson's reaction turbine is a __________ reaction turbine.

Steam exhaust from high pressure turbine is reheated in

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

Hygrometry deals with the

Ultimate analysis of fuel is determination of percentage of

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

On Millier chart, the constant pressure lines

The discharge is __________ at critical pressure.

An air preheater

The feed check valve is used in order to

The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure)

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

Which of the following varieties of coals is mostly used in steam boilers?

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)

The actual vacuum in a condenser is equal to

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

The artificial draught is produced by

Pour point of fuel oil is the

The difference of supersaturated temperature and saturation temperature at that pressure is called

The water tubes in a simple vertical boiler are

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.

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)