1
Capacitor is a device used to__________
Answer: store electrical energy
Questions
5
A capacitor using chemical reactions to store charge is _______
Answer: Electrolyte capacitor
6
In a variable capacitor, capacitance can be varied by ______
Answer: Turning the rotatable plates in or out
7
Capacitor preferred when there is high frequency in the circuits is _______
Answer: Mica capacitor
9
A power factor of a circuit can be improved by placing which, among the following, in a circuit?
Answer: Capacitor
10
Calculate the time constant of a series RC circuit consisting of a 100microF capacitor in series with a 100ohm resistor.
Answer: 0.01 sec
14
Capacitance is directly proportional to__________
Answer: Area of cross section between the plates
15
What will happen to the capacitor just after the source is removed?
Answer: It will remain in its charged state
16
What is the value of capacitance of a capacitor which has a voltage of 4V and ha 8C of charge?
Answer: 2F
18
When the supply frequency increases, what happens to the capacitive reactance in the circuit?
Answer: Decreases
19
______________ capacitors have a high leakage voltage.
Answer: Polyester capacitor
20
____________ capacitors usually have a colour code to find its value.
Answer: Polyester capacitor
