Air capacitors are generally available in the range_________?
A. 10 to 400 pF
B. 1 to 20 pF
C. 100 to 900 pF
D. 20 to 100 pF
Month: December 2018
A capacitor charged to 200 V has 2000 (iC of charge. The value of capacitance will be_____________?
A capacitor charged to 200 V has 2000 (iC of charge. The value of capacitance will be_____________?
A. 10 F
B. 10 uF
C. 100 nF
D. 1000 uF
Capacitance increases with_____________?
Capacitance increases with_____________?
A. increase in plate area and decrease in distance between the plates
B. increase in plate area and distance between the plates
C. decrease in plate area and value of applied voltage
D. reduction in plate area and distance between the plates
In a capacitive circuit___________?
In a capacitive circuit___________?
A. a steady value of applied voltage causes discharge
B. an increase in applied voltage makes a capacitor charge
C. decrease in applied voltage makes a capacitor charge
D. none of the above
The dissipation factor of a good dielectric is of the order of____________?
The dissipation factor of a good dielectric is of the order of____________?
A. 0.0002
B. 0.002
C. 0.02
D. 0.2
Three capacitors each of the capacity C are given. The resultant capacity 2/3 C can be obtained by using them_____________?
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
The sparking between two electrical contacts can be reduced by inserting a___________?
The sparking between two electrical contacts can be reduced by inserting a___________?
A. capacitor in parallel with contacts
B. capacitor in series with each contact
C. resistance in line
D. none of the above
Which of the following statements is incorrect _________________?
Which of the following statements is incorrect _________________?
A. The leakage resistance of ceramic capacitors is generally high
B. The stored energy in a capacitor decreases with reduction in value of capacitance
C. The stored energy in a capacitor increases with applied voltage
D. A wire cable has distributed capacitance between the conductors
In the case of a lossy capacitor, its series equivalent resistance value will be_______________?
In the case of a lossy capacitor, its series equivalent resistance value will be_______________?
A. small
B. very small
C. large
D. zero
Which of the following capacitors has relatively shorter shelf life____________?
Which of the following capacitors has relatively shorter shelf life____________?
A. Mica capacitor
B. Electrolytic capacitor
C. Ceramic capacitor
D. Paper capacitor