# Power System MCQs – Multiple Choice Questions on Power Systems

Power System MCQ Questions

Contents

- 1 Variable load on power system results in
- 2 A curve showing the variation of load on the electric power station with respect to time is known as
- 3 Area under the daily load curve divided by the total number of hours provides
- 4 Sum of continuous ratings of all the equipment connected to electric power system is defined as
- 5 Demand factor is mathematically defined as
- 6 Load factor is mathematically defined as
- 7 Higher the load factor of electric power station, the _________ will be the cost per unit generated
- 8 The ratio of the sum of individual maximum demands to the maximum demand on power station is known as the diversity factor
- 9 Which of the following is correct regarding diversity factor
- 10 The greater the diversity factor, the ________ is the cost of generation of power

## Variable load on power system results in

Variable load on power system results in:

- Increase in production cost
- Requirement of additional equipment.
- Both of these
- None of these

Correct answer: 3. Both of these

## A curve showing the variation of load on the electric power station with respect to time is known as

A curve showing the variation of load on the electric power station with respect to time is known as:

- Power curve
- Hydro curve
- Load curve
- All of above

Correct answer: 3. Load curve

## Area under the daily load curve divided by the total number of hours provides

Area under the daily load curve divided by the total number of hours provides:

- Load variation
- Daily Maximum demand
- Daily average load
- None of these

Correct answer: 3. Daily average load

## Sum of continuous ratings of all the equipment connected to electric power system is defined as

Sum of continuous ratings of all the equipment connected to electric power system is defined as:

- Maximum demand
- Connected load
- Daily average load
- Load variation

Correct answer: 1. Connected load

## Demand factor is mathematically defined as

Demand factor is mathematically defined as:

- Demand factor = Maximum demand * Connected load
- Demand factor = Maximum demand/Connected load
- Demand factor = Maximum demand + Connected load
- Demand factor = Maximum demand – Connected load

Correct answer: 2. Demand factor = Maximum demand/Connected load

## Load factor is mathematically defined as

Load factor is mathematically defined as:

- Load factor = Average load/Maximum demand
- Load factor = Average load * Maximum demand
- Load factor = Average load + Maximum demand
- Load factor = Average load – Maximum demand

Correct answer: 1. Load factor = Average load/Maximum demand

## Higher the load factor of electric power station, the _________ will be the cost per unit generated

Higher the load factor of the electric power station, the _________ will be the cost per unit generated:

- Higher
- Lesser

Correct answer: 2. Lesser

## The ratio of the sum of individual maximum demands to the maximum demand on power station is known as the diversity factor

The ratio of the sum of individual maximum demands to the maximum demand on power station is known as the diversity factor:

- Plant capacity factor
- Diversity factor
- Load factor
- Maximum demand

Correct answer: 2. Diversity factor

## Which of the following is correct regarding diversity factor

Which of the following is correct regarding diversity factor:

- It is always smaller than 1
- It is always equal to 1
- It is always equal to zero

Correct answer: 1. It is always greater than 1

## The greater the diversity factor, the ________ is the cost of generation of power

The greater the diversity factor, the ________ is the cost of generation of power:

- Higher
- Lesser

Correct answer: 2. Lesser

Explanation: Greater diversity factor implies lesser maximum demand which in turn means that lesser plant capacity is required and in turn the capital investment on the plant is reduced.