Power Plant Engineering (2171910) MCQs

MCQs of Condensers and Cooling Towers

Showing 1 to 10 out of 35 Questions
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1.

A condenser where circulating water flows through tubes which are surrounded by steam is known as

(a)

Surface condenser
(b)

Jet condenser
(c)

Barometric condenser
(d)

Evaporative condenser
Answer:

Option (a)

2.

Which of the following is required for a steam condensing plant?

(a)

Condenser
(b)

Condensate pump
(c)

Air extraction pump
(d)

All of these
Answer:

Option (d)

3.

The function of a condenser in a thermal power plant is__________.

(a)

to act as a reservoir to receive steam for the turbine
(b)

to condense steam into condensate to be reused again
(c)

to create a vacuum
(d)

all of these
Answer:

Option (d)

4.

The ratio of actual vacuum to the ideal vacuum in a condenser is called

(a)

Condenser efficiency
(b)

Vacuum efficiency
(c)

Boiler efficiency
(d)

Nozzle efficiency
Answer:

Option (b)

5.

A condenser in a steam power plant is

(a)

the increases expansion ratio of steam
(b)

reduces back pressure of steam
(c)

reduce the temperature of exhaust steam
(d)

all of these
Answer:

Option (d)

6.

Factors influencing cooling tower performance is__________.

(a)

cooling range
(b)

ambient wet bulb temperature
(c)

the flow of water-cooled
(d)

all of them
Answer:

Option (d)

7.

How does the flow of air occur in natural draught cooling towers?

(a)

Natural pressure head density between cold outside air and humid inside air
(b)

Variation in pressure of both cold outside air and humid inside air
(c)

Due to the given air vents and vacuum ports
(d)

Because of difference in the volume of both the of airs
Answer:

Option (a)

8.

How is air produced in mechanical draught cooling tower?

(a)

Air Tuyeres
(b)

Propeller fans
(c)

Air blowers
(d)

Louvre
Answer:

Option (b)

9.

Why is induced draught considered better than the forced draught?

(a)

Because power requirement is high for forced draught
(b)

Maintenance of induced draught fan is costlier
(c)

Forced draught is less efficient
(d)

Forced draught produces less amount of speed of air
Answer:

Option (a)

10.

Approach of a cooling tower is

(a)

 difference between cold water outlet temperature and wet bulb temperature
(b)

 difference between hot water inlet temperature and wet bulb temperature
(c)

 difference between hot water inlet temperature and cold water outlet temperature
(d)

 difference between atmoshpheric temperature and wet bulb temperature
Answer:

Option (a)

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