Power System MCQs Part 4
Contents
- 1 The basic unit of energy is
- 2 The thermal efficiency and electrical efficiency of a power plant are 33% and 88% respectively, the overall efficiency of power plant is
- 3 A power plant has a connected load of 40 MW and a maximum demand of 25 MW. The power plant generates 60 * 10^6 kWh per annum. The demand factor of plant is
- 4 Reserve capacity of power plant is defined as
- 5 Large size nuclear power plants are recommended to be used as
The basic unit of energy is
The basic unit of energy is:
- joule
- watt
- joule/s
- watt/s
Correct answer: 1. joule
The thermal efficiency and electrical efficiency of a power plant are 33% and 88% respectively, the overall efficiency of power plant is
The thermal efficiency and electrical efficiency of a power plant are 33% and 88% respectively, the overall efficiency of power plant is:
- 12%
- 9.35%
- 29.04%
- 66.08%
Correct answer: 3. 29.04%
Overall efficiency = Thermal efficiency * Electrical efficiency = 0.33 * 0.88 = 29.04%
A power plant has a connected load of 40 MW and a maximum demand of 25 MW. The power plant generates 60 * 10^6 kWh per annum. The demand factor of plant is
A power plant has a connected load of 40 MW and a maximum demand of 25 MW. The power plant generates 60 * 10^6 kWh per annum. The demand factor of plant is:
- 0.457
- 0.52
- 0.625
- 0.75
Correct answer: 3. 0.625
Solution: Demand factor = Maximum demand / Connected load = 25 MW/40 MW = 0.625
Reserve capacity of power plant is defined as
Reserve capacity of power plant is defined as:
- Reserve capacity = Plant capacity + Max demand
- Reserve capacity = Plant capacity – Max demand
- Reserve capacity = Max demand – Plant capacity
- Reserve capacity = Plant capacity * Max demand
Correct answer: 2. Reserve capacity = Plant capacity – Max demand
Large size nuclear power plants are recommended to be used as
Large size nuclear power plants are recommended to be used as:
- Peak load power plants
- Base load power plants
Correct answer: 2. Base load power plants