The radius of a dished head is taken approximately as

Question

The radius of a dished head is taken approximately as

B. Half

C. One

D. Two

Correct Answer :

C. One

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The Parsons' reaction turbine has

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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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Over fire burning is the phenomenon of

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The maximum heat loss is a boiler occurs due to

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The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become

A. Wet

D. Dry

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Vacuum for reciprocating steam engines compared to steam turbines is

A. More

B. Equal

C. Less

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Curtis turbine is a

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

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Which device is used in thermal power plants to reduce level of pollution?

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The cylindrical shell of a Lancashire boiler has diameter from

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The effect of bleeding is that

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The fittings mounted on the boiler for its proper and safe functioning is a

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In locomotive boiler, maximum steam pressure is limited to

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Secondary air is the air used to

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The reheat factor is the ratio of the

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The efficiency of an impulse turbine is maximum when (where V_b = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle)

Discuss this answer

In natural circulation type boiler,

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

Discuss this answer

The steam enters the nozzle at a

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In a throttling process

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The temperature of flue gases at air heater outlet should be

A. 100°C

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With increase in load, radiant superheater has

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When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.

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

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The effect of friction in the nozzle __________ dryness fraction of steam.

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The high steam and low water safety valve is not used in

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The rate of steam produced in Benson boiler is

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Hard coke is used in

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The diameter of Cornish boiler varies from

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The fire tubes in a Locomotive boiler has _________ diameter.

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Answer 1

A. One fourth

Answer 2

A. Only moving blades

Answer 3

B. Only fixed blades

Answer 4

C. Identical fixed and moving blades

Answer 5

D. Fixed and moving blades of different shape

Answer 6

A. Supply of excess, air

Answer 7

B. Supply of excess coal

Answer 8

C. Burning CO and unburnts in upper zone of furnace by supplying more air

Answer 9

D. Fuel bed firing

Answer 10

A. Moisture in fuel

Answer 11

B. Dry flue gases

Answer 12

C. Steam formation

Answer 13

D. Unburnt carbon

Answer 14

B. Superheated

Answer 15

C. Remain dry saturated

Answer 16

D. Could be more or less depending on the size of plant

Answer 17

A. Simple reaction turbine

Answer 18

B. Velocity compounded turbine

Answer 19

C. Pressure compounded turbine

Answer 20

D. Pressure-velocity compounded turbine

Answer 21

A. Blow off cock

Answer 22

B. Fusible plug

Answer 23

C. Superheater

Answer 24

D. Stop valve

Answer 25

A. Induced draft fan

Answer 26

B. Smoke meter

Answer 27

C. Chimney

Answer 28

D. Precipitator

Answer 29

A. 1 to 2 m

Answer 30

B. 1.25 to 2.25 m

Answer 31

C. 1.5 to 2.5 m

Answer 32

D. 1.75 to 2.75 m

Answer 33

A. It increases the thermodynamic efficiency of the turbine

Answer 34

B. Boiler is supplied with hot water

Answer 35

C. It decreases the power developed by the turbine

Answer 36

D. All of the above

Answer 37

A. Water level indicator

Answer 38

B. Pressure gauge

Answer 39

C. Safety valve

Answer 40

D. All of these

Answer 41

A. 1 kg/cm²

Answer 42

B. 5 kg/cm²

Answer 43

C. 10 kg/cm²

Answer 44

D. 18 kg/cm²

Answer 45

A. Provide air around burners for obtaining optimum combustion

Answer 46

B. Transport and dry the coal

Answer 47

C. Convert CO (formed in lower zone of furnace) into CO₂ at higher zone

Answer 48

D. Air delivered by induced draft fan

Answer 49

A. Cumulative heat drop to the isentropic heat drop

Answer 50

B. Isentropic heat drop to the heat supplied

Answer 51

C. Total useful heat drop to the total isentropic heat drop

Answer 52

D. None of the above

Answer 53

A. V_b = 0.5 V cosα

Answer 54

B. V_b = V cosα

Answer 55

C. V_b = 0.5 V² cosα

Answer 56

D. V_b = V² cosα

Answer 57

A. Heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum

Answer 58

B. Water is supplied in drum and through down comers located in atmospheric condition it passes to the water wall and rises to drum in the form of mixture of water and steam

Answer 59

C. Feed pump is employed to supplement natural circulation in water wall type furnace

Answer 60

D. Water is converted into steam in one. Pass without any recirculation

Answer 61

A. Mechanical efficiency

Answer 62

B. Overall efficiency

Answer 63

C. Indicated thermal efficiency

Answer 64

D. Brake thermal efficiency

Answer 65

A. High pressure and a low velocity

Answer 66

B. High pressure and a high velocity

Answer 67

C. Low pressure and a low velocity

Answer 68

D. Low pressure and a high velocity

Answer 69

A. Heat transfer takes place

Answer 70

B. Work is done by the expanding steam

Answer 71

C. Internal energy of steam changes

Answer 72

D. None of the above

Answer 73

B. Above dew point temperature of flue gases

Answer 74

C. Below dew point temperature of flue gases

Answer 75

D. Less than wet bulb temperature of flue gases

Answer 76

A. Drooping characteristic

Answer 77

B. Linear characteristic

Answer 78

C. Rising characteristic

Answer 79

D. Flat characteristic

Answer 80

A. Increases

Answer 81

B. Decreases

Answer 82

C. Remain same

Answer 83

D. None of these

Answer 84

A. Below atmospheric pressure

Answer 85

B. 1 kg/cm²

Answer 86

C. 100 kg/cm²

Answer 87

D. 225.6 kg/cm²

Answer 88

A. Has no effect on

Answer 89

B. Decreases

Answer 90

C. Increases

Answer 91

D. None of these

Answer 92

A. Cochran boiler

Answer 93

B. Cornish boiler

Answer 94

C. Lancashire boiler

Answer 95

D. Locomotive boiler

Answer 96

A. 100 tonnes/h

Answer 97

B. 135 tonnes/h

Answer 98

C. 175 tonnes/h

Answer 99

D. 250 tonnes/h

Answer 100

A. Cement industry

Answer 101

B. Thermal power plant

Answer 102

C. Blast furnace

Answer 103

D. Domestic use

Answer 104

A. 0.5 to 1 m

Answer 105

B. 1 to 2 m

Answer 106

C. 1.25 to 2.5 m

Answer 107

D. 2 to 3 m

Answer 108

A. 4.75 mm

Answer 109

B. 5.47 mm

Answer 110

C. 7.45 mm

Answer 111

D. 47.5 mm

The radius of a dished head is taken approximately as

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

The Parsons' reaction turbine has

The length of shell of a Locomotive boiler is

Over fire burning is the phenomenon of

The maximum heat loss is a boiler occurs due to

The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become

Vacuum for reciprocating steam engines compared to steam turbines is

Curtis turbine is a

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

Which device is used in thermal power plants to reduce level of pollution?

The cylindrical shell of a Lancashire boiler has diameter from

The effect of bleeding is that

The fittings mounted on the boiler for its proper and safe functioning is a

In locomotive boiler, maximum steam pressure is limited to

Secondary air is the air used to

The reheat factor is the ratio of the

The efficiency of an impulse turbine is maximum when (where V_b = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle)

In natural circulation type boiler,

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

The steam enters the nozzle at a

In a throttling process

The temperature of flue gases at air heater outlet should be

With increase in load, radiant superheater has

When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.

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

The effect of friction in the nozzle __________ dryness fraction of steam.

The high steam and low water safety valve is not used in

The rate of steam produced in Benson boiler is

Hard coke is used in

The diameter of Cornish boiler varies from

The fire tubes in a Locomotive boiler has _________ diameter.

Also checkout

The radius of a dished head is taken approximately as

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

The Parsons' reaction turbine has

The length of shell of a Locomotive boiler is

Over fire burning is the phenomenon of

The maximum heat loss is a boiler occurs due to

The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become

Vacuum for reciprocating steam engines compared to steam turbines is

Curtis turbine is a

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

Which device is used in thermal power plants to reduce level of pollution?

The cylindrical shell of a Lancashire boiler has diameter from

The effect of bleeding is that

The fittings mounted on the boiler for its proper and safe functioning is a

In locomotive boiler, maximum steam pressure is limited to

Secondary air is the air used to

The reheat factor is the ratio of the

The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle)

In natural circulation type boiler,

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

The steam enters the nozzle at a

In a throttling process

The temperature of flue gases at air heater outlet should be

With increase in load, radiant superheater has

When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.

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

The effect of friction in the nozzle __________ dryness fraction of steam.

The high steam and low water safety valve is not used in

The rate of steam produced in Benson boiler is

Hard coke is used in

The diameter of Cornish boiler varies from

The fire tubes in a Locomotive boiler has _________ diameter.

Also checkout

The efficiency of an impulse turbine is maximum when (where V_b = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle)