Electrical Power Plant Engineering Objective Test - Set 01

Practice Test: Question Set - 01


1. The thermal efficiency of the engine with condenser as compared to without condenser, for a given pressure and temperature of steam, is
    (A) Higher
    (B) Lower
    (C) Same as long as initial pressure and temperature is unchanged
    (D) None of the above

2. In a regenerative surface condenser
    (A) There is one pump to remove air and condensate
    (B) There are two pumps to remove air and condensate
    (C) There are three pumps to remove air, vapor and condensate
    (D) There is no pump; the condensate gets removed by gravity

3. Load center in a power station is
    (A) Center of coal fields
    (B) Center of maximum load of equipments
    (C) Center of gravity of electrical system
    (D) None of the above

4. In coal preparation plant, magnetic separators are used to remove
    (A) Dust
    (B) Clinkers
    (C) Iron particles
    (D) Sand

5. Underfeed stokers work best for __________ coals high in volatile matter and with caking tendency
    (A) Anthracite
    (B) Lignite
    (C) Semi-bituminous and bituminous
    (D) All of the above

6. Deaerative heating is done to
    (A) Heat the water
    (B) Heat the air in the water
    (C) Remove dissolved gases in the water
    (D) None of these

7. Rankine cycle operating on low pressure limit of p1 and high pressure limit of p2
    (A) Has higher thermal efficiency than the Carnot cycle operating between same pressure limits
    (B) Has lower thermal efficiency than Carnot cycle operating between same pressure limit
    (C) Has same thermal efficiency as Carnot cycle operating between same pressure limits
    (D) May be more or less depending upon the magnitude of p1 and p2

8. In a regenerative feed heating cycle, the optimum value of the fraction of steam extracted for feed heating
    (A) Decreases with increase in Rankine cycle efficiency
    (B) Increases with increase in Rankine cycle efficiency
    (C) Is unaffected by increase in Rankine cycle efficiency
    (D) None of the above

9. Binary vapor cycles are used to
    (A) Increase the performance of the condenser
    (B) Increase the efficiency of the plant
    (C) Increase efficiency of the turbine
    (D) None of the above

10. The draught produced by steel chimney as compared to that produced by brick chimney for the same height is
    (A) Less
    (B) More
    (C) Same
    (D) May be more or less

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Item Reviewed: Electrical Power Plant Engineering Objective Test - Set 01 Rating: 5 Reviewed By: Pranab Debnath
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