MEDIUM
NEET
IMPORTANT
Earn 100

Does a transformer change the frequency of A.C.?

Important Questions on Alternating Current

EASY
NEET
IMPORTANT
We can measure D.C. by an ordinary ammeter, but not A.C. why?
MEDIUM
NEET
IMPORTANT
Can a choke coil be replaced by a condenser of suitable frequency?
EASY
NEET
IMPORTANT
Is there any device by which DC can be controlled without any loss of energy? Can choke coil do so?
EASY
NEET
IMPORTANT
What is the function of oil in a transformer?
EASY
NEET
IMPORTANT
Name two useful devices based on mutual induction.
EASY
NEET
IMPORTANT
For an ac, can ever rms value be equal to peak value? Average value be equal to peak value.
EASY
NEET
IMPORTANT
Find the time required for a 50 Hz alternating current to change its value from zero to the RMS value.