Power Plant Engineering (2171910) MCQs

MCQs of Steam Turbine

Showing 1 to 10 out of 61 Questions
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1.

The modern steam turbines are

(a)

impulse turbines
(b)

reaction turbines
(c)

impulse-reaction turbines
(d)

none of the above
Answer:

Option (c)

2.

The impulse reaction turbine has its driving force

(a)

as an impulsive force
(b)

as a reaction force
(c)

partly as an impulsive force and partly as a reaction force
(d)

none of the mentioned
Answer:

Option (c)

3.

Which of the following is a steam turbine?

(a)

De laval
(b)

Kaplan
(c)

Francis
(d)

Bulb
Answer:

Option (a)

4.

Steam turbines are used for

(a)

large marine propulsion
(b)

electric power generation
(c)

direct drive of fans, compressors, pumps
(d)

all of these
Answer:

Option (d)

5.

Steam turbine is classified on basis of 

(a)

direction of steam flow
(b)

number of stages
(c)

mode of steam action
(d)

all of these
Answer:

Option (d)

6.

The expansion of steam, as it flows over the blades in the reaction turbine, represents

(a)

isothermal process
(b)

isentropic process
(c)

throttling process
(d)

free-expansion process
Answer:

Option (b)

7.

In an impulse turbine

(a)

the steam is expanded in nozzles only and there is a pressure drop and heat drop
(b)

the steam is expanded both in fixed and moving blades continuously
(c)

the steam is expanded in moving blades only
(d)

the pressure and temperature of steam remains constant
Answer:

Option (a)

8.

High pressure turbine is a Non-Condensing turbine due to __________.

(a)

exhaust conditions
(b)

axial flow of the steam
(c)

pressure-velocity compounding
(d)

velocity compounding
Answer:

Option (a)

9.

Non Condensing steam turbine can also be called as 

(a)

Extraction steam turbine
(b)

Backpressure steam turbine
(c)

Impulse steam turbine
(d)

None of the mentioned
Answer:

Option (b)

10.

A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as

(a)

back-pressure turbine
(b)

pass-out turbine
(c)

low-pressure turbine
(d)

impulse turbine
Answer:

Option (b)

Showing 1 to 10 out of 61 Questions
1 2 3 4 5 6