1. Which of the following statements is FALSE about double-pass condensers?
a) The water flows in one direction through some tubes and returns through the remainder
b) Exhaust steam flows through the tubes, while cooling water passes over the outer surface of the tubes
c) It is a type of surface condenser
d) Cooling water doesn’t come in contact with the exhaust steam
Ans. b
2. Which of the following statements is False about steam condensers?
a) Jet condensers are cheaper than surface condensers
b) Cooling water comes direct contact with the exhaust steam in jet condensers
c) Cooling water does not come in direct contact with exhaust steam in surface condensers
d) Jet condensers are further classified into single-pass and double-pass condensers
Ans. d
3. Which of the following statements is TRUE about single-pass condenser?
a) It is a type of jet Condenser
b) The flow of water is in one direction only
c) The water flows in one direction through some tubes and returns through the remainder
d) It is not used to condense steam
Ans. b
4. Cooling water is sprayed into the exhaust steam in _____
a) steam condensers
b) surface condensers
c) jet condensers
d) jet condensers and high condensers
Ans. c
5. Steam condensers are classified into _____
a) jet condensers and fast condensers
b) jet condensers and surface condensers
c) high condensers and surface condensers
d) slow condensers and jet condensers
Ans. b
6. Discharging condensate to hot well improves plant efficiency because _____
a) condensate is not wasted
b) condensate cools down faster in the hot well
c) feed water for boiler is taken from the hot well
d) it increases the pressure in the hot well
Ans. c
7. Which of the following is NOT an element of a steam condensing plant?
a) Supply of cooling water
b) Turbine
c) Condenser
d) Wet air pump
Ans. b
8. Sub-atmospheric pressure is also called _____
a) Gauge pressure
b) Absolute pressure
c) Vacuum pressure
d) High altitude pressure
Ans. c
9. Steam condensers help in maintaining high back pressure on the exhaust side of the piston of a steam engine.
a) True
b) False
Ans. b
10. Steam condenser converts steam into water.
a) True
b) False
Ans. a
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