Question :

Rectifiers are used to convert


A) Direct current to Alternating current
B) Alternating current to Direct current
C) high voltage to low voltage
D) low voltage to high voltage

Answer : B

Description :



Related Questions - 1


Pick out the scalar quantity


A) force
B) pressure
C) velocity
D) acceleration

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Metals are good conductors of electricity because


A) they contain free electrons
B) the atoms are lightly packed
C) they have high melting point
D) All of the above

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Light from the Sun reaches us in nearly


A) 2 minutes
B) 4 minutes
C) 8 minutes
D) 16 minutes

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It is more difficult to walk on a sandy road than on a concrete road because


A) sand is soft and concreter is hard
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C) the friction between sand and feet is more than that between concrete and feet
D) the sand is grainy but concrete is smooth

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Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to


A) the heating effect of current alone
B) hysteresis loss alone
C) both the heating effect of current and hysteresis loss
D) intense sunlight at noon

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