Power Generation Technology MCQ Part 1 (PGT MCQ)



1. out of the following which one is not a unconventional source of energy ?

(A) Tidal power
(B) Geothermal energy
(C) Nuclear energy
(D) Wind power

 Answer:- C

2. Puverized coal is
(A) cool free from ash
(B) non-smoking coal
(C) coal which bums For long time
(D) coal broken into fine particles

 Answer:- D

3. Heating value of coal is approximately
(A) 1000-2000 kcal / kg
(B) 2000-4000 kcal / kg
(C) 5000-6500 kcal / kg
(D) 9000-10,500 kcal / ko

 Answer:- C

4. Water gas is a mixture of
(A) CO2 and O2
(B) O2 and H2
(C) H2,. N2 and O2
(D) CO, N2 and H2
 Answer:- D

5. Coal used in power plant is also known as
(A) steam coal
(B) charcoal
(C) coke
(D) soft coal

Answer:- A

6. Which of the following is considered as superior quality of coal ?
(A) Bituminous coal
(B) Peat
(C) Lignite
(D) Coke

Answer :- A

7. In a power plant, coal is carried from storage place to boilers generally by means of
(A) bucket
(B) V-belts
(C) trolleys
(D) manually

 Answer:- B

8. Live storage of coal in a power plant means
(A) coal ready for combustion
(B) preheated coal
(C) storage of coal sufficient to meet 24 hour demand of the plant
(D) coal in transit

 Answer:- C

9. Pressure of steam in condenser is
(A) atmospheric pressure
(B) more than pressure
(C) slightly less than pressure
(D) much less than pressure

Answer:- D

10. Equipment used for pulverizing the coal is known as
(A) Bal mill
(B) Hopper
(C) Burner
(D) Stoker.

Answer:- A

11. Power plants using coal work closely on known which of the following cycle ?
(A) Otto cycle
(B) Binary vapor cycle
(C) Brayton cycle
(D) Rankine cycle

Answer:- D

12. Critical pressure of water is
(A) 1 kg /cm^2
(B) 100 kg / cm^2
(C) 155 kg/cm^2
(D) 213 8 kg/cm^2

Answer:- D

13. The efficiency of a thermal power plant improves with
(A) increased quantity of coal burnt
(B) larger quantity of water used
(C) lower load in the plant
(D) use of high steam pressures.

 Answer:-D

14. Which of the following contributes to the improvement of efficiency of Rankine cycle in a thermal power plant ?
(A) Reheating of steam at intermediate stage
(B) Regeneration use of steam for heating boiler feed water
(C) Use of high pressures
(D) All of the above.

 Answer:- D

15. Steam pressures usually used in thermal power plants are

(A) 5 kg/cm to 10 kg / cm^2
(B) 50 kg/cm to 100 kg/cm^2
(C) 110 kg/cm' to 170 kg / cm^2
(D) 200 kg/cm to 215 kg / cm^2

Answer:-  C

16) The potential of developing tidal power in India is in

a kutch
b. Ran
c. San joe
d. Severn

ANSWER: Kutch

17) Pugga valley in Ladakh is suitable for which among the following power generation?

a)Solar
b. Gec thermal
c.Wind
d. None of these

ANSWER: Geothermal

18) Presence of non - condensable gasses in a geo-pressured water causes

a. Pollution problem
b. Corrosion problem
C.Flow problem 
d. All of the above

ANSWER: All of the above

19) Direct conversion of heat energy into electrical energy is possible through

a. MHD generators 
b. Fuel or solar cells
c Thermionic converters 
d. Both (a) and (c)
e None of these

ANSWER: Both (a) and (c)

20) In geothermal power plants waste water is

a. Discharged back to earth.

b. Discharged into the sea.

c Recirculated after cooling in cooling towers

d. Evaporated in ponds.

ANSWER: Discharged back to earth.

21) What is load curve?

a. A plot of load current
 b. A plot of load vs time.
c. A plot of load vs duration of time. d. Total number of units generated vs time.

ANSWER: A plot of load vs time.

22) What does the area under the load curve represent?

a. System voltage
 b. Current

c. Energy consumed

d. Maximum demand

ANSWER: Energy consumed

23) What does the highest point on the daily load curve represent?
a. Peak load
b. Maximum demand
 c. Both (a) & (d)
d. None of these

ANSWER: Maximum demand

24) Load curve of a generation is always
a. Positive slope
b. Zero slope 
c. Negative siape
d. Combination of ta), (b) and (c)

ANSWER: Combination of (a). (b) and (c)

25) If the daily load curve is divided by 24, what does this curve represent?
a. Average load for the day
b. Connected load
 c. Maximum demand
d. Demand factor

ANSWER: Average load for the day

26) What does a mass curve represent?
a. Average load
b. The total energy consumed by the load upto a particular time in a day 
c. The number of hours for which a particular lasts during the day
d. The variation of load during different hours of the day

ANSWER: The total energy consumed by the load upto a particular time in a day

27) The mass curve is plotted from which of the following curve? a)Chronologkal curve 
B. Energy load curve 
C load duration curve
d. None of these

ANSWER: load duration curve

28) What does a load duration curve represent? 
a. The variation of load during different tours of the day
b. Average load
C.The number of hours for which a particular lasts during the day
d. None of the above

ANSWER: The number of hours for which a particular lasts during the day

29) What is the shape of the load duration curve?
a.Rectangular shape 
b. Triangular shape
C.Parabolic shape
 d. Free hand sketch

ANSWER: Rectangular shape

30) Maximum and Minimum loads on the load duration curve is represented on which respective side?
a Left and Right. 
b. Right and Left.
C.Randomly 
d. None of these

ANSWER: Left and Right.