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


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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Related Questions - 2


Planets do not twinkle because


A) they emit light of a constant intensity
B) their distance from the earth does not change with time
C) they are very far away from the earth resulting in decrease in intensity of light
D) they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable

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Related Questions - 3


Let a thin capillary tube be replaced with another tube of insufficient length then, we find water


A) will overflow
B) will not rise
C) depressed
D) change its meniscus

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Related Questions - 4


Pa(Pascal) is the unit for


A) thrust
B) pressure
C) frequency
D) conductivity

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Related Questions - 5


Pick out the scalar quantity


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

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