Test: Power Plant Engineering- 2

QUESTION: 1

The designation of a cross compounded turbineis given as 'cc 4F 32' Here '32' represents

A.
length of turbine
B.
Volume of turbine
C.
No. of blades
D.
Height of turbine blades

Solution:

QUESTION: 2

Compounding of impulse turbine is done to

A.
increases power output
B.
Bring rotational speed
C.
Decrease friction
D.
Increase efficiency

Solution:

QUESTION: 3

Which of the following is a velocity compoundedturbine.

A.
Delaval
B.
Rateau
C.
Curtis
D.
Parson

Solution:

QUESTION: 4

Which of the following is a 100% Reactionturbine

A.
Delanal
B.
Ration
C.
Passon's
D.
Hero's

Solution:

QUESTION: 5

Maximum Diagram efficiency for a impulse turbine is

A.
cos² µ
B.
C.
cos µ
D.

Solution:

QUESTION: 6

The optimun speed ratio of a reaction turbine for maximum efficiency is

A.
cos² μ
B.
cos μ/2
C.
cos² μ/2
D.
None of the above

Solution:

QUESTION: 7

Water from feed regulating system first enters the

A.
Boiler drum
B.
Air Preheater
C.
Convective superheater
D.
Economizer

Solution:

QUESTION: 8

Natural circulation boilers does not require.

A.
Boiler Drum
B.
Circulating pump
C.
Water walls
D.
Feed regulating pump

Solution:

QUESTION: 9

Between economiser and electrostaticPrecipitator lies

A.
Air preheater
B.
Induced Draught fan
C.
Convective
D.
Forced Draught fan.

Solution:

QUESTION: 10

Heat transfer in the furnace is maximum due to

A.
Conduction
B.
Radiation
C.
Convection
D.
All has equal contribution

Solution:

QUESTION: 11

Once through boiler does not have the following

A.
Furnace
B.
Chimney
C.
Water walls
D.
Boiler Drum

Solution:

QUESTION: 12

In a boiler is mass of liquid water flow is 10 kgand mass of steam produced is 1 kg circulationratio is

A.
10
B.
9
C.
0.1
D.
None

Solution:

QUESTION: 13

Which of the following is a boiler mounting

A.
Feed pump
B.
Superheater
C.
Steam Trap
D.
Safety value

Solution:

QUESTION: 14

Which of the following is a boiler assesory ?

A.
Water level indicator
B.
Feed check value
C.
Fusible plug
D.
Injector

Solution:

QUESTION: 15

Which of the following is for boiler safety

A.
Pressure gauge
B.
Superheater
C.
Air Preheater
D.
Steam Trap

Solution:

QUESTION: 16

Boiler Accessories are used for:

A.
Sefety
B.
Power Enrichment
C.
Increasing Efficiency
D.
beautifrication

Solution:

QUESTION: 17

Which of the following are water tube boiler.

A.
Benson
B.
Cornish
C.
Cochran
D.
1ocomotive

Solution:

QUESTION: 18

Which of the following boilers has naturalcirculation.

A.
Benson
B.
lamont
C.
locomotive
D.
velox

Solution:

QUESTION: 19

Which of the following is a internally fired boiler.

A.
Babcock and wilcox
B.
lancashire
C.
Striling
D.
None

Solution:

QUESTION: 20

Which of the following is a low pressure boiler.

A.
velox
B.
lancashire
C.
cochran
D.
cornish

Solution:

 Cochran boiler is modification of simple vertical boiler where heating surface has been increased by increasing numbers of fire tubes.

 It is used for steam generation at low rate.

 It is a fire tube type boiler.

QUESTION: 21

The purpose of electrostatic precipitator is

A.
Heat feed water
B.
Cleaning of feed water
C.
Separate steam
D.
Cleaning of flue gases.

Solution:

QUESTION: 22

Blow off cock is used to

A.
Clean boiler furnace.
B.
Prevent overheating
C.
Cleaning of flue gases
D.
Prevent over pressure.

Solution:

QUESTION: 23

In brayton cycle heat is supplied at constant

A.
pressure
B.
Temperature
C.
volume
D.
none

Solution:

QUESTION: 24

Mach (M) number for hypersonic flow is

A.
M < 1
B.
1 < M < 5
C.
M = 1
D.
M > 5

Solution:

QUESTION: 25

Eulers power for a rotary maching can be givenas

A.
B.
C.
D.

Solution:

25 Questions MCQ Test Mechanical Engineering SSC JE (Technical) | Test: Power Plant Engineering- 2

The designation of a cross compounded turbineis given as 'cc 4F 32' Here '32' represents

Compounding of impulse turbine is done to

Which of the following is a velocity compoundedturbine.

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