The power of a boiler may be defined as

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The power of a boiler may be defined as

A. The ratio of heat actually used in producing the steam to the heat liberated in the furnace

B. The amount of water evaporated or steam produced in kg per kg of fuel burnt

C. The amount of water evaporated from and at 100° C into dry and saturated steam

D. The evaporation of 15.653 kg of water per hour from and at 100° C

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The overall efficiency of thermal power plant is

A. Boiler efficiency, turbine efficiency, generator efficiency

B. All the three above plus gas cycle efficiency

C. Carnot cycle efficiency

D. Regenerative cycle efficiency

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The evaporation of 15.653 kg of water per hour from and at 100°C is called

A. Evaporative capacity

B. Factor of evaporation

C. Equivalent evaporation

D. One boiler h.p.

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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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The pressure at which latent heat of vaporisation of water is zero, is

A. Below atmospheric pressure

B. 1 kg/cm²

C. 100 kg/cm²

D. 225.6 kg/cm²

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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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The ratio of total useful heat drop to the total isentropic heat drop, is called

A. Stage efficiency

B. Internal efficiency

C. Rankine efficiency

D. None of these

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Degree of reaction is defined as the ratio of

A. Heat drop in fixed blades to the heat drop in moving blades

B. Heat drop in moving blades to the heat drop in fixed blades

C. Heat drop in moving blades to the heat drop in fixed blades plus heat drop in moving blades

D. Heat drop in fixed blades plus heat drop in moving blades to the heat drop in moving blades

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In a nozzle, whole frictional loss is assumed to occur between

A. Inlet and throat

B. Inlet and outlet

C. Throat and exit

D. All of these

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The bituminous coal is no caking if its carbon content is

A. 78-81 %

B. 81-85 %

C. 85-90 %

D. 90-95 %

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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 diameter of fire tube of Cornish boiler compared to its shell is

A. One half

B. One third

C. One fourth

D. One fifth

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The nozzle efficiency is the ratio of

A. Workdone on the blades to the energy supplied to the blades

B. Workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam

C. Energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam

D. None of the above

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At which pressure the properties of water and steam become identical

A. 0.1 kg/cm²

B. 1 kg/cm²

C. 100 kg/cm²

D. 225.6 kg/cm²

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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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If partial pressure of air and steam be p_a and p_s respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to

A. p_s - p_a

B. p_a - p_s

C. p_a + p_s

D. None of these

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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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A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be

A. 79 m/s

B. 188 m/s

C. 450 m/s

D. 900 m/s

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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

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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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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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A boiler in India should conform to safety regulations of

A. DIN

B. BS

C. ASTM

D. IBR

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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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Pulverised fuel is used for

A. Better burning

B. More calorific value

C. Less radiation loss

D. Medium sized units

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Boiler stays are used to

A. Prevent flat surfaces under pressure from tearing apart

B. Take care of failure in shear

C. Take care of failure in compression

D. Provide support for boiler

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In reaction turbines, the axial thrust is due to

A. Pressure drop across the rotor

B. Change in axial velocity

C. Both (A) and (B)

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

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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

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The length of Cornish boiler varies from

A. 2 to 4.5 m

B. 3 to 5 m

C. 5 to 7.5 m

D. 7 to 9 m

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The maximum steam pressure in a Locomotive boiler is limited to

A. 0.18 MN/m²

B. 1.8 MN/m²

C. 18 MN/m²

D. 180 MN/m²

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The Parsons' reaction turbine has

A. Only moving blades

B. Only fixed blades

C. Identical fixed and moving blades

D. Fixed and moving blades of different shape

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Accepted Answer

B. The amount of water evaporated or steam produced in kg per kg of fuel burnt

The power of a boiler may be defined as

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

The overall efficiency of thermal power plant is

The evaporation of 15.653 kg of water per hour from and at 100°C is called

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

The pressure at which latent heat of vaporisation of water is zero, is

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

The ratio of total useful heat drop to the total isentropic heat drop, is called

Degree of reaction is defined as the ratio of

In a nozzle, whole frictional loss is assumed to occur between

The bituminous coal is no caking if its carbon content is

1 kg.m is equal to

The diameter of fire tube of Cornish boiler compared to its shell is

The nozzle efficiency is the ratio of

At which pressure the properties of water and steam become identical

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)

If partial pressure of air and steam be p_a and p_s respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to

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

A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be

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

The length of shell of a Locomotive boiler is

The equivalent evaporation of a boiler is a measure to compare

A boiler in India should conform to safety regulations of

Steam turbines may be classified according to

Pulverised fuel is used for

Boiler stays are used to

In reaction turbines, the axial thrust is due to

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

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

The length of Cornish boiler varies from

The maximum steam pressure in a Locomotive boiler is limited to

The Parsons' reaction turbine has

Also checkout

The power of a boiler may be defined as

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

The overall efficiency of thermal power plant is

The evaporation of 15.653 kg of water per hour from and at 100°C is called

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

The pressure at which latent heat of vaporisation of water is zero, is

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

The ratio of total useful heat drop to the total isentropic heat drop, is called

Degree of reaction is defined as the ratio of

In a nozzle, whole frictional loss is assumed to occur between

The bituminous coal is no caking if its carbon content is

1 kg.m is equal to

The diameter of fire tube of Cornish boiler compared to its shell is

The nozzle efficiency is the ratio of

At which pressure the properties of water and steam become identical

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)

If partial pressure of air and steam be pa and ps respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to

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

A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be

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

The length of shell of a Locomotive boiler is

The equivalent evaporation of a boiler is a measure to compare

A boiler in India should conform to safety regulations of

Steam turbines may be classified according to

Pulverised fuel is used for

Boiler stays are used to

In reaction turbines, the axial thrust is due to

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

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

The length of Cornish boiler varies from

The maximum steam pressure in a Locomotive boiler is limited to

The Parsons' reaction turbine has

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)

If partial pressure of air and steam be p_a and p_s respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to

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