The value of dielectric constant for vacuum is taken as____________?
A. zero
B. 1
C. 4
D. 10
Month: December 2018
While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is____________?
While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is____________?
A. short-circuited
B. open circuited
C. alright
D. leaky
Electric field intensity is a quantity_____________?
Electric field intensity is a quantity_____________?
A. scalar
B. vector
C. both A. and (6)
D. none of the above
Energy stored in the electric field of a capacitor C when charged from a D.C source of voltage V is equal to joules_______________?
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
When 4 volts e.m.f. is applied across a 1 farad capacitor, it will store energy of_____________?
When 4 volts e.m.f. is applied across a 1 farad capacitor, it will store energy of_____________?
A. 2 joules
B. 4 joules
C. 6 joules
D. 8 joules
Dielectric constant for mica is nearly_____________?
Dielectric constant for mica is nearly_____________?
A. 200
B. 100
C. 3 to 8
D. 1 to 2
What is the value of capacitance that must be connected in parallel with 50 pF condenser to make an equivalent capacitance of 150 pF ?
What is the value of capacitance that must be connected in parallel with 50 pF condenser to make an equivalent capacitance of 150 pF ?
A. 50 pF
B. 100 pF
C. 150 pF
D. 200 pF
The capacitor preferred for high frequency circuits is_____________?
The capacitor preferred for high frequency circuits is_____________?
A. air capacitor
B. mica capacitor
C. electrolytic capacitor
D. none of the above
If a 6 uF capacitor is charged to 200 V, the charge in coulombs will be____________?
If a 6 uF capacitor is charged to 200 V, the charge in coulombs will be____________?
A. 800 uC
B. 900 uC
C. 1200 uC
D. 1600 uC
Which of the following material has least value of dielectric constant ?
Which of the following material has least value of dielectric constant ?
A. Ceramics
B. Oil
C. Glass
D. Paper