Test: Power Systems - 6

Question 1

Which distribution system is more reliable?

Accepted Answer

Ring main system

Answer

Tree system

Answer

Radial system

Answer

All are equally reliable

Question 2

The insulation resistance test is performed on power line with

Accepted Answer

meggar.

Answer

ohmmeter

Answer

earth tester

Answer

any of these

Question 3

The commercial sources of energy are

Accepted Answer

fossile fuels, water and radioactive substances

Answer

solar, wind , biomass

Answer

wood, animal wastes and agricultural wastes

Answer

none of the above

Question 4

What is the total power installed capacity (approximate) in India?

Accepted Answer

125, 000 MW

Answer

175, 000 MW

Answer

200, 000 MW

Answer

50, 000 MW

Question 5

The power development programmes that are possible in Tamil Nadu are largely based on

Accepted Answer

nuclear power plants

Answer

Steam power plants

Answer

hydroelectric power plants

Answer

diesel power plants

Question 6

The power output from an hydroelectric power plant depends on

Accepted Answer

discharge, head and system efficiency.

Answer

type of dam, type of catchment area and discharge.

Answer

type of dam, head and system efficiency

Answer

type of turbine, type of dam and type of catchment area

Question 7

What is the correct expression for the electricalpower developed by a hydroelectric plant in KW?

Accepted Answer

Answer

Answer

75 ´ 0.736wQhh

Answer

Question 8

A hydroelectric power station is commonly found in

Accepted Answer

hilly area

Answer

desert areas

Answer

swamps

Answer

grasslands

Question 9

In hydroelectric power plants

Accepted Answer

Operating cost is low and initial cost is high.

Answer

operating cost is high and initial cost is low.

Answer

both operating cost as well initial cost are high.

Answer

both operating cost as well as initial cost are low.

Question 10

The advantage (s) of hydro plants is/are

Accepted Answer

all the above

Answer

low operating cost

Answer

they can be started and loaded very quickly.

Answer

they can be used as base load and peak load plants as well

Question 11

The largest size of hydroelectric unit in India is

Accepted Answer

1960 MW

Answer

3150 MW

Answer

1500 MW

Answer

9010 MW

Question 12

The flow duration curve at a given head of a hydroelectric plant is used to determine

Accepted Answer

total power available at the site

Answer

total units of energy available.

Answer

load-factor at the plant

Answer

diversity factor for the plant.

Question 13

In hydropower stations what is an enlarged body of water just above the intake and used as a regulating reservoir, called?

Accepted Answer

Forebay

Answer

Spillways

Answer

Reservoir

Answer

Penstock

Question 14

In high head hydroelectric power plant, the velocity of water flow in penstock is around

Accepted Answer

7 m/s

Answer

2 m/s

Answer

4 m/s

Answer

10 m/s

Question 15

What is the function of booms?

Accepted Answer

It supports the dam

Answer

It supports the penstock

Answer

It divert the Icebergs from flowing into the penstock

Answer

To hold the turbine structure

Question 16

The function of a surge tank is to

Accepted Answer

relieve water hammer pressures in the penstock pipe

Answer

Supply water at constant pressure.

Answer

produce surge in the pipeline

Answer

none of the above

Question 17

Water hammer occurs in

Accepted Answer

penstock

Answer

surge tank

Answer

turbine casting

Answer

draft tube

Question 18

For variable heads of near about but less than 30 metres, Which type of tubines is used in hydropower stations?

Accepted Answer

Kaplan

Answer

Pelton

Answer

Francis

Answer

None of the above

Question 19

For harnessing lower variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjustable vanes is

Accepted Answer

Kaplan

Answer

Francis

Answer

Pelton

Answer

Impeller

Question 20

The specific speeds of Kaplan, Francis and Pelton turbines are in

Accepted Answer

the decreasing order

Answer

the increasing order

Answer

neither increasing nor decreasing order

Answer

None of these

Question 21

An impulse turbine

Accepted Answer

operates by intial complete conversio to kinetic energy.

Answer

is most suited for low head and high discharge power plants

Answer

makes use of a draft tube.

Answer

always operates submerged

Question 22

In Francis turbine runner, the number of blades is usually of the order of

Accepted Answer

16 &#8211; 24

Answer

8 &#8211; 10

Answer

6 &#8211; 8

Answer

3 &#8211; 6

Question 23

The maximum head of a Kaplan turbine is limited to

Accepted Answer

70 m

Answer

100 m

Answer

125 m

Answer

None of these

Question 24

In India, pumped storage power plant

Accepted Answer

exists in Kadampurai

Answer

does not exist at all

Answer

exists is Rajasthan alone

Answer

exists in Haryana

Question 25

The pumped storage scheme is employed to supply

Accepted Answer

during the peak hours.

Answer

during the off-peak hours

Answer

system base load

Answer

None of these

Power Systems - 6 - Free MCQ Practice Test with solutions, GATE EE

MCQ Practice Test & Solutions: Test: Power Systems - 6 (25 Questions)

Which distribution system is more reliable?

The insulation resistance test is performed on power line with

The commercial sources of energy are

What is the total power installed capacity (approximate) in India?

The power development programmes that are possible in Tamil Nadu are largely based on

The power output from an hydroelectric power plant depends on

What is the correct expression for the electricalpower developed by a hydroelectric plant in KW?

A hydroelectric power station is commonly found in

In hydroelectric power plants

The advantage (s) of hydro plants is/are

The largest size of hydroelectric unit in India is

The flow duration curve at a given head of a hydroelectric plant is used to determine

In hydropower stations what is an enlarged body of water just above the intake and used as a regulating reservoir, called?

In high head hydroelectric power plant, the velocity of water flow in penstock is around

What is the function of booms?

The function of a surge tank is to

Water hammer occurs in

For variable heads of near about but less than 30 metres, Which type of tubines is used in hydropower stations?

For harnessing lower variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjustable vanes is

The specific speeds of Kaplan, Francis and Pelton turbines are in

An impulse turbine

In Francis turbine runner, the number of blades is usually of the order of

The maximum head of a Kaplan turbine is limited to

In India, pumped storage power plant

The pumped storage scheme is employed to supply

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