Power Systems Objective Questions & Answers – Set 6

The insulator thickness on the conductor, in cables depends upon

The most commonly used material for insulators of overhead lines is

A power generating station has a plant capacity of 200 MW and maximum power demand is 150 MW. If average power generation is 110 MW, then find the load factor and capacity factor respectively?

The value of diversity factor is

Ideal plant load factor is

If sag in an overhead line increase, tension in the line

Which of the following is used in thermal plants

The conductor carries more current on surface as compared to core. This is called as

For 66 kV lines the number of insulator discs of each 11 kV used are

Corona is accompanied by

Corona loss is ----------------- on hilly areas than as plain areas.

Which of the following effects are associated with transmission line

Which of the following is/are base load plants?

Demand factor of a plant is

Area under the daily curve divided by 24 gives

The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase?

A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator?

Which of the following relationships are not valid for short transmission lines

By using guard ring in a transmission line, its string efficiency

Suspension type insulators are used for voltage beyond

Plant capacity factor value is

Peak load power plants is/are

A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage?

In thermal plant most of the energy is wasted in

Highest pressure generating pump inside the thermal plant is

The value of diversity factor is

Surge tank is kept very close to the

In a transmission line the insulators to be used at the dead end or sharp curves are

What is the function of economiser in steam boilers

Electrostatic precipitators in thermal power plants are used for