MCQ Questions on Generation of Electrical Power

201. A Geothermal field produces

1. Hot water
2. Wet steam
3. Dry steam

The correct amongst the given is
(a) 1 and 2
(b) 1 and 3
(c) 1, 2 and 3
(d) None of these

202. Horizontal axis and vertical axis are the types of

(a) Nuclear Reactor
(b) Wind Mills
(c) Bio Gas Reactor
(d) Solar Cell

203. Which of the following statement is incorrect? [UPPCL – 2016]

(a) Uranium is a radioactive material
(b) Anthracite is the best form of coal
(c) Solar energy is pollution free
(d) Wind energy is a conventional source of energy

204. The ratio of energy produced in a given time to the maximum possible energy that can be produced is

(a) Utilization factor
(b) Plant capcity factor
(c) Demand factor
(d) Load factor [LMRC – 2015]

205. Global warming is mainly due to

(a) Emission of heat from engines
(b) Emission of CO₂, due to burning of fossil fuels
(c) Use of nuclear energy
(d) Air pollution  [MP JE – 2015]

206. If the sum of individual maximum demands is 2.694 kW and the maximum demand at any time is 0.9 kW. What is the diversity factor in power system?

(a) 2.99
(b) 5
(c) 10
(d) 15

207. Domestic consumer load is around

(a) 5 kW
(b) 40 kW
(c) 80 kW
(d) 120 kW

208. What is the usually load factor range for domestic load? [MPPKVVCL – 2017]

(a) 10% to 15%
(b) 30% to 40%
(c) 50% to 60%
(d) 60% to 70%

209. In an electrical installation, the maximum demand is given by its

(a) instantaneous maximum demand
(b) greatest average power demand
(c) average maximum demand over a definite interval of time during a certain period
(d) average power demand during an interval of one minute

210. What is resultant of the area under daily load curve divided by 24 hours?

(a) least load
(b) total kWh generated
(c) peak demand
(d) average load

211. The rates for consumption of 250 kWh at block rate traiff is quoted as,

1. first 20 kWh at 60 paise/kWh
2. next 25 kWh at 50 paise/kWh
3. first 35 kWh at 40 paise/kWh
4. exceeding 80 kWh at 30 paise/unit

The average cost per unit of consumption is
(a) 33.4 paisc/kWh
(b) 89.4 paise/kWh
(c) 35.8 paise/kWh
(d) 53.8 paise/kWh

212. A load consumes 600 kWh per day at a load factor of 0.45. What will be the maximum demand in kW? [LMRC JE – 2016]

(a) 40 kW
(b) 60 kW
(c) 55.55 kW
(d) 50 kW

213. The yearly load duration curve of a power plant is a straight line. The average annual load is 400 MW. The capacity of the plant is 900 MW. The plant capacity factor will be

(a) 0.6
(b) 0.5
(c) 0.3
(d) 0.4 [LMRC JE 2016]

214. A large diversity factor means

(a) Increases the maximum demand
(b) Increased the unit price of electricity
(c) Reduce the unit price of electricity
(d) Large plant capacity is required [LMRC JE – 2016]

215. What is the most effective way to reduce the cost of power generation in a power station?

(a) By increasing the diversity factor and decreasing the load factor
(b) By increasing both the diversity factor and the load factor
(c) By decreasing both the diversity factor and the load factor
(d) By decreasing the diversity factor and increasing the load factor

216. In a generating station connected load is 50 × 10³ KW and maximum demand is 20 × 10⁶ W and annual energy generated is 60 × 10⁶ unit then what is demand factor of plant? [UPPCL 2013]

(a) 53%
(b) 40%
(c) 83%
(d) 33%

217. Electric generating plant are inter connected to

(a) Ensure reliability of supply
(b) Maintain constancy of frequency
(c) Imporve voltage regulation
(d) To increase transmission efficiency

218. During the calculation of electric work expenses contingency expenses & material & labour cost are expected in precentage are respectively

(a) 1%
(b) 15% to 10%
(c) 50% to 60%
(d) 60% to 70% [UPRVUNL – 2015]

219. Load shedding is done to

(a) Improve power factor
(b) Run the equipment efficiently
(c) Repair the machine
(d) Reduce peak demand

220. Which of the following expressions depicts the Utilization Factor?

(a) Ratio of maximum generator demand to the generator capacity
(b) Ratio of actual energy produced to the generaor capacity
(c) Ratio of generator capacity to maximum generation demand
(d) Ratio of generator capacity to actual energy produced

221. Demand Factor is defined as

(a) Maximum load/average load
(b) Average load/Maximum load
(c) Maximum load/ total connected load
(d) Total connected load/Maximum load