Multi-stage steam turbines are of the

Question

Multi-stage steam turbines are of the

A. Velocity compounded type

B. Reaction type

C. Pressure compounded type

D. All of these

Share this question with your friends

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Comment

When steam after doing work in the cylinder passes into a condenser, the engine is said to be a

A. Slow speed engine

B. Vertical steam engine

C. Condensing steam engine

D. Non-condensing steam engine

Discuss this answer

A nozzle is said to be a divergent nozzle

A. When the cross-section of the nozzle increases continuously from entrance to exit

B. When the cross-section of the nozzle decreases continuously from entrance to exit

C. When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit

D. None of the above

Discuss this answer

Fusible plug for boilers is made of fusible metal containing tin, lead, and

A. Bismuth

B. Copper

C. Aluminium

D. Nickel

Discuss this answer

The number of water level indicators in a boiler are generally _________ in number.

A. One

B. Two

C. Three

D. Four

Discuss this answer

The major axis of elliptical manholes on the shell should be provided

A. Longitudinally

B. Circumferentially

C. On dished end

D. Anywhere

Discuss this answer

Fire tube boilers are those in which

A. Flue gases pass through tubes and water around it

B. Water passes through the tubes and flue gases around it

C. Forced circulation takes place

D. Tubes are laid vertically

Discuss this answer

In a reaction turbine

A. The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades

B. The expansion of steam takes place partly in the fixed blades and partly in the moving blades

C. The steam is expanded from a high pressure to a condenser pressure in one or more nozzles

D. The pressure and temperature of steam remains constant

Discuss this answer

Relative percentage of heat absorbed through the heat transfer of (i) Furnace water wall (ii) Boiler tank (iii) Superheater (iv) Economiser (v) Air-heater of a typical boiler of 200 MW capacity would be of the order of

A. 48 : 20 : 15 : 7 : 10

B. 10 : 7 : 15 : 20 : 48

C. 20 : 48 : 7 : 15 : 10

D. 7 : 15 : 20 : 10 : 48

Discuss this answer

Steam engine operates on

A. Carnot cycle

B. Joule cycle

C. Stirling cycle

D. Brayton cycle

Discuss this answer

Superheating of steam is done at

A. Constant volume

B. Constant temperature

C. Constant pressure

D. Constant entropy

Discuss this answer

Feed water conditioning in thermal power plants in done to

A. Reduce hardness and for removal of solids

B. Increase efficiency of thermal power plant

C. Increase heat transfer rate

D. Increase steam parameters

Discuss this answer

The amount of water evaporated in kg per kg of fuel burnt is called

A. Evaporative capacity of a boiler

B. Equivalent evaporation from and at 100° C

C. Boiler efficiency

D. None of these

Discuss this answer

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

Discuss this answer

Efficiency of a thermal cycle increases by

A. Regeneration

B. Reheating of steam

C. Both (A) and (B)

D. Cooling of steam

Discuss this answer

The function of a valve rod is

A. To provide reciprocating motion to the slide valve

B. To convert reciprocating motion of the piston into rotary motion of the crank

C. To convert rotary motion of the crankshaft into to and fro motion of the valve rod

D. To provide simple harmonic motion to the D-slide valve

Discuss this answer

For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

A. 1 kg

B. 4/3 kg

C. 8/3 kg

D. 2 kg

Discuss this answer

The diameter of fire tubes in Cochran boiler is of the order of

A. 2 cm

B. 6 cm

C. 8 cm

D. 12 cm

Discuss this answer

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

Discuss this answer

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.

Discuss this answer

The amount of water evaporated from feed water at _________ into dry and saturated steam at 100° C at normal atmospheric pressure is called equivalent evaporation from and at 100° C.

A. 0°C

B. 40°C

C. 60°C

D. 100°C

Discuss this answer

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

Discuss this answer

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)

A. V_b = 0.5 V cosα

B. V_b = V cosα

C. V_b = 0.5 V² cosα

D. V_b = V² cosα

Discuss this answer

The ratio of the workdone on the blades to the energy supplied to the blades, is called

A. Blading efficiency

B. Nozzle efficiency

C. Gross or stage efficiency

D. Mechanical efficiency

Discuss this answer

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

Discuss this answer

The bituminous coal is no caking if its carbon content is

A. 78-81 %

B. 81-85 %

C. 85-90 %

D. 90-95 %

Discuss this answer

A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called

A. Blow off cock

B. Stop valve

C. Superheater

D. None of these

Discuss this answer

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

Discuss this answer

The ratio of the workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam is called

A. Blading efficiency

B. Nozzle efficiency

C. Stage efficiency

D. Mechanical efficiency

Discuss this answer

A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called

A. Receiver type compound engine

B. Tandem type compound engine

C. Woolf type compound engine

D. None of these

Discuss this answer

Latent heat of dry steam at atmospheric pressure is equal to

A. 539 kcal/ kg

B. 539 BTU/ lb

C. 427 kcal/ kg

D. 100 kcal/ kg

Discuss this answer

Accepted Answer

D. All of these

Multi-stage steam turbines are of the

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

When steam after doing work in the cylinder passes into a condenser, the engine is said to be a

A nozzle is said to be a divergent nozzle

Fusible plug for boilers is made of fusible metal containing tin, lead, and

The number of water level indicators in a boiler are generally _________ in number.

The major axis of elliptical manholes on the shell should be provided

Fire tube boilers are those in which

In a reaction turbine

Relative percentage of heat absorbed through the heat transfer of (i) Furnace water wall (ii) Boiler tank (iii) Superheater (iv) Economiser (v) Air-heater of a typical boiler of 200 MW capacity would be of the order of

Steam engine operates on

Superheating of steam is done at

Feed water conditioning in thermal power plants in done to

The amount of water evaporated in kg per kg of fuel burnt is called

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

Efficiency of a thermal cycle increases by

The function of a valve rod is

For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

The diameter of fire tubes in Cochran boiler is of the order of

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

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

The amount of water evaporated from feed water at _________ into dry and saturated steam at 100° C at normal atmospheric pressure is called equivalent evaporation from and at 100° C.

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

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)

The ratio of the workdone on the blades to the energy supplied to the blades, is called

A valve installed between the boiler and the feed pump is

The bituminous coal is no caking if its carbon content is

A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called

Boiler stays are used to

The ratio of the workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam is called

A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called

Latent heat of dry steam at atmospheric pressure is equal to

Also checkout

Multi-stage steam turbines are of the

Correct Answer :

Show all Steam Boilers, Engines, Nozzles & Turbines MCQ

Related Questions

When steam after doing work in the cylinder passes into a condenser, the engine is said to be a

A nozzle is said to be a divergent nozzle

Fusible plug for boilers is made of fusible metal containing tin, lead, and

The number of water level indicators in a boiler are generally _________ in number.

The major axis of elliptical manholes on the shell should be provided

Fire tube boilers are those in which

In a reaction turbine

Relative percentage of heat absorbed through the heat transfer of (i) Furnace water wall (ii) Boiler tank (iii) Superheater (iv) Economiser (v) Air-heater of a typical boiler of 200 MW capacity would be of the order of

Steam engine operates on

Superheating of steam is done at

Feed water conditioning in thermal power plants in done to

The amount of water evaporated in kg per kg of fuel burnt is called

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

Efficiency of a thermal cycle increases by

The function of a valve rod is

For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

The diameter of fire tubes in Cochran boiler is of the order of

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

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

The amount of water evaporated from feed water at _________ into dry and saturated steam at 100° C at normal atmospheric pressure is called equivalent evaporation from and at 100° C.

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

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)

The ratio of the workdone on the blades to the energy supplied to the blades, is called

A valve installed between the boiler and the feed pump is

The bituminous coal is no caking if its carbon content is

A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called

Boiler stays are used to

The ratio of the workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam is called

A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called

Latent heat of dry steam at atmospheric pressure is equal to

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)