Which of the following natural directions of energy transformation are correct?
1.Heat energy to mechanical energy
2.Mechanical energy to heat energy
3.Heat energy to electrical energy
4.Electrical energy to heat energy

1 and 2

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1 and 3

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1 and 4

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2 and 4

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Solution

The correct option is D 2 and 4
Option:(d)

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Similar questions

An electric motor is a device which transforms :

(a) mechanical energy to electrical energy

(b) heat energy to electrical energy

(d) electrical energy to mechanical energy

DIRECTIONS : Match Column-I with Colum-II and select the correct answer using the codes given below the columns.
$\begin{matrix} C o l u m n - I & C o l u m n - I I A . E l e c t r i c m o t o r & P . E l e c t r i c a l e n e r g y t o s o u n d e n e r g y B . E l e c t r i c b e l l & Q . E l e c t r i c a l e n e r g y t o m e c h a n i c a l e n e r g y C . E l e c t r i c b u l b & R . L i g h t e n e r g y t o e l e c t r i c a l e n e r g y D . P h o t o e l e c t r i c c e l l e n e r g y & S . H e a t e n e r g y t o m e c h a n i c a l E . S t e a m e n g i n e & T . E l e c t r i c e n e r g y t o l i g h t e n e r g y \end{matrix}$

Q. Which of the following statements about a refrigerator is/are correct?
1.It converts electrical energy into heat energy.
2.It converts electrical energy into mechanical energy.
3.It transfers heat from a high temperature to a low temperature.
4.It transfers heat from a low temperature to a high temperature.

Q. Name the devices or machines which convert :

(i) Electrical energy into sound energy.
(ii) Heat energy into kinetic energy (or mechanical energy).
(iii) Chemical energy into kinetic energy (or mechanical energy).
(iv) Chemical energy into heat energy.
(v) light energy into heat energy.

Q. An electric generator converts:

(a) electrical energy into mechanical energy.
(b) mechanical energy into heat energy.
(c) electrical energy into chemical energy.
(d) mechanical energy into electrical energy.

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Which of the following natural directions of energy transformation are correct?1.Heat energy to mechanical energy2.Mechanical energy to heat energy3.Heat energy to electrical energy4.Electrical energy to heat energy

The correct option is D 2 and 4Option:(d)

Which of the following natural directions of energy transformation are correct?
1.Heat energy to mechanical energy
2.Mechanical energy to heat energy
3.Heat energy to electrical energy
4.Electrical energy to heat energy

The correct option is D 2 and 4
Option:(d)