1. Which of the
following capacitors will have the least variation ?
(A) Paper
capacitor
(B) Ceramic
capacitor
(C) Silver
plated mica capacitor
(D) None of the
above
Answer- (C)
2. Electric
field intensity is a quantity
(A) scalar
(B) vector
(C) both (A) and
(B)
(D) none of the
above
Answer- (B)
3. Energy stored
in the electric field of a capacitor C when charged
from a D.C
source of voltage V is equal to joules
(A) CV2
(B) C2V
(C) CV2
(D) CV
Answer-(A)
4. A unit tube
of flux is known as tube
(A) Newton
(B) Faraday
(C) Michale
(D) None of the
above
Answer-(B)
5. A gang
condenser is a
(A) polarised
capacitor
(6) variable
capacitor
(C) ceramic
capacitor
(D) none of the
above
Answer-
6. Three
capacitors each of the capacity C are given. The resultant
capacity 2/3 C
can be obtained by using them
(A) all in
series
(B) all in
parallel
(C) two in
parallel and third in series with this combination
(D) two in
series and third in parallel across this combination
Answer-(C)
7. In a
capacitor the electric charge is stored in
(A) metal plates
(B) dielectric
(C) both (A) and
(B)
(D) none of the
above
Answer-(B)
8. Which
capacitor will be physically smaller for the same ratings ?
(A) Ceramic
capacitor
(B) Paper
capacitor
(C) Both will be
of equal size
(D) None of the
above
Answer- (A)
9. capacitors
are mainly used for radio frequency tuning.
(A) Paper
(B) Air
(C) Mica
(D) Electrolytic
Answer- (B)
10. capacitors
can be used only for D.C.
(A) Air
(B) Paper
(C) Mica
(D) Electrolytic
Answer- (D)
11. The units of
volume charge density are
(A)
Coulomb/meter
(B)
Coulomb/meter
(C)
Coulomb/meter
(D)
Coulomb/meter
Answer-(C)
12. Paper
capacitors usually have a tolerance of
(A) ± 5%
(B) ± 10%
(C) ± 15%
(D) ± 20%
Answer- (B)
13. The relative
permittivity has the following units
(A) F/m
(B) m/F
(C) Wb/m
(D) no units
Answer- (C)
14. The value of
dielectric constant for vacuum is taken as
(A) zero
(B) 1
(C) 4
(D) 10
Answer- (B)
15. The property
of a capacitor to store electricity is called its
(A) capacitance
(B) charge
(C) energy
(D) none of the
above
Answer- (A)
16. When the
dielectric is homogeneous,the potential gradient is
(A) uniform
(B) non-uniform
(C) zero
(D) any of the
above
Answer- (A)
17. The total
deficiency or excess of electrons in a body is known as
(A) current
(B) voltage
(C) potential
gradient
(D) charge
Answer- (D)
18. Which of the
following material has least value of dielectric
constant ?
(A) Ceramics
(B) Oil
(C) Glass
(D) Paper
Answer- (B)
19. The unit of
dielectric strength is given by
(A) V/m
(B) V2/m
(C) m/V
(D) m/V2
Answer- (A)
20. The unit of
electric intensity is
(A) N/C2
(B) Wb/m2
(C) N/C
(D) N2/C
Answer-(C)