Physics MCQs Chapter 15+16

1.     Which of the following uses electric energy and does not convert it into any other form

a)     Transformer

b)    Motor

c)     DC generator

d)    AC generator

2.     The only difference between construction of DC generator and AC generator is that of

a)     Carbon brushes

b)    Coil

c)     Commutator

d)    Magnetic field

3.     If capacitance of L-C circuit is made four times then frequency of the circuit becomes

a)     Twice

b)    One half

c)     Four times

d)    None

1.a

2.c

3.b