Sources of Energy Test

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Sources of Energy Test - 27

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Question 1
1 / -0

At present, the contribution of hydroelectricity to the total power generation in India is

A
A little more than $$22$$%

B
A little more than $$35$$%

C
A little more than $$47$$%

D
None of these

Solution

At present, the contribution of hydroelectricity to the total power generation in India is nearly $$22$$ %
Question 2
1 / -0

Energy available from the oceans is

A
OTE

B
Tidal energy

C
Sea-waves energy

D
All of these

Solution

Energy can be harnessed from an ocean in two ways - i) exploiting the mechanical energy of wave or tide
ii) using the temperature difference between the surface water and deep seawater.
Tidal energy and sea-wave energy are harnessed using the first way. Ocean thermal energy (OTE) is harnessed using the second way.
Question 3
1 / -0

Which of the following is not a high wind-energy region of India?

A
Bay of Bengal

B
Gujarat

C
The Arabian sea Islands

D
Punjab

Solution
Question 4
1 / -0

Arrange the following steps of conversion of ocean thermal energy into electricity, in a proper sequence.
(a) The vapour of ammonia or CFC is passed over the turbines of generators.
(b) The hot water from the ocean is used to vapourise the liquid like ammonia or CFC.
(c) Cold water from the ocean depths is used to cool the vapour again into liquid.
(d) This cold liquid is again vapourised and the process continues.

A
b a c d

B
c a b d

C
c b a d

D
a b c d

Solution

The hot water in the ocean is used to evaporate liquids like ammonia or CFC. This vapour is used to rotate the turbines of the generator and the vapour is again cooled down to a liquid by using the cold water from the ocean depth. This cooled liquid ammonia or CFC is again vapourised and the above process continues.
Hence correct sequence is b --> a --> c --> d

Option A
Question 5
1 / -0

Principle of Hydrogen bomb is .................. reactions.

A
Uncontrolled fusion

B
Fission

C
Controlled fusion

D
None of these

Solution

A hydrogen bomb is based on the principle of uncontrollable nuclear fusion . Nuclear fusion is a process where nuclei of two light atoms combine to form a new nucleus.
Hence, the correct option is A.
Question 6
1 / -0

Among the following the sources of energy for which the sun is not a chief source of energy is ________.

A
Hydroelectric power plant

B
Ocean thermal energy conversion (OTEC).

C
Tidal energy

D
Biomass.

Solution

Only for the hydroelectric power plant the Sun is not the chief source. The source of hydroelectric power plant is the gravitational potential energy stored in water. [Option A]
Question 7
1 / -0

_________ is / are used to produce energy in OTEC.

A
Tidal energy

B
Temperature difference between the different layers of water in ocean

C
Ocean waves

D
None of the above

Solution

OTEC is Ocean Thermal Energy Conversion.
It uses turbine generators to create electricity from temperature difference of deep cold water and circulating warm surface water. The warm surface-water is used to boil a volatile liquid like ammonia. The vapours of the liquid are then used to run the turbines. The cold water from the depth of the ocean is pumped up and it condenses the vapour again to liquid.

The correct option is B
Question 8
1 / -0

Arrange the following steps in the conversion of hydel energy to electricity in a proper sequence.
(a) Released water is made to fall on the blades of the turbines.
(b) Water in the dam is released.
(c) Water is collected in the dam.
(d) Potential energy is converted to kinetic energy.
(e) The armature of the electric generator rotates to produce electricity.

A
b,c,d,e,a

B
a,d,b,c,e

C
e,c,d,b,a

D
c,b,d,a,e

Solution

Initially water is collected in the dam. When it is released, the potential energy is converted to kinetic energy. The released water is made to fall on the blades of turbines. The armature of the electric generator rotates to produce electricity.

Hence, the correct order is c,b,d,a,e. Hence, option (D) is correct.
Question 9
1 / -0

The output of a given windmill

A
increases with an increase in wind velocity.

B
decreases with an increase in wind velocity.

C
is independent of wind velocity.

D
cannot be determined

Solution

Solution:
Wind mill consists of turbine and rotor. The output of any windmill depends on the velocity of the wind through the rotor and the size of the turbine. If we increase the speed of the wind, it will increase the output of the windmill.
Hence option A is correct.
Question 10
1 / -0

Find the false statement from the following statements given below:

A
Geothermal power plants cannot operate round the clock.

B
The initial cost in setting up Geothermal power plant will be high.

C
Geothermal power plant uses free and renewable source of energy.

D
Operating cost involved in a Geothermal power plant is less.

Solution

Geothermal energy is a clean source of power, which would be available round the clock and throughout the year, unlike other renewable energy sources.

When underground water comes in contact with the hot spot, steam is generated. The hot spots are due to geological changes which happen round the clock. So the steam from them can be trapped and used to run turbines for electricity generation throughout the day. So option (A) is false.

Hence, option (A) is the correct answer.

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Sources of Energy Test - 27

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Sources of Energy Test - 27

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SHARING IS CARING

Question 1

A little more than $$22$$%

A little more than $$35$$%

A little more than $$47$$%

None of these

Solution

Question 2

OTE

Tidal energy

Sea-waves energy

All of these

Solution

Question 3

Bay of Bengal

Gujarat

The Arabian sea Islands

Punjab

Solution

Question 4

b a c d

c a b d

c b a d

a b c d

Solution

Question 5

Uncontrolled fusion

Fission

Controlled fusion

None of these

Solution

Question 6

Hydroelectric power plant

Ocean thermal energy conversion (OTEC).

Tidal energy

Biomass.

Solution

Question 7

Tidal energy

Temperature difference between the different layers of water in ocean

Ocean waves

None of the above

Solution

Question 8

b,c,d,e,a

a,d,b,c,e

e,c,d,b,a

c,b,d,a,e

Solution

Question 9

increases with an increase in wind velocity.

decreases with an increase in wind velocity.

is independent of wind velocity.

cannot be determined

Solution

Question 10

Geothermal power plants cannot operate round the clock.

The initial cost in setting up Geothermal power plant will be high.

Geothermal power plant uses free and renewable source of energy.

Operating cost involved in a Geothermal power plant is less.

Solution

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