A. Paraffin wax
B. Quartz
C. Glass
D. Air
Correct Answer: Air ✔
Last Updated: December 15, 2018
Related MCQs
- Permittivity is expressed in__________?
- In a cable capacitor, voltage gradient is maximum at the surface of the__________?
- The property of a capacitor to store electricity is called its__________?
- A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is__________?
- The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to _________ percent of its value
- Dielectric strength of a material depends on__________?
- 1 volt/meter is same as__________?
- The bridge used for the measurement of the value of the capacitance is__________?
- The capacitance between two plates increases with__________?
- If an ohmmeter reading immediately goes practically to zero and stays there, capacitor is__________?
- The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by__________?
- Mica capacitors are characterized by all of the following except__________?
- An uncharged conductor is placed near a charged conductor, then__________?
- Paper condenser is__________?
- Out of the following capacitors of identical rating which one will have the smallest dimensions __________ ?
- The presence of an uncharged conductor near a charged one increases the__________?
- Which of the following statements is correct ?
- For a good 0.05 uF capacitor ohmmeter reading should__________?
- The ohmmeter reading for a short circuited capacitor is__________?
- An electrolytic capacitor is generally made to provide__________?
- A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be__________?
- A condenser suitable for D.C. only is________?
- Which of the following capacitor is preferred in case of single phase motor ?
- When a dielectric is placed in an electric field the field strength__________?
- Acharge which when placed in vacuum from an equal and similar charge repels with a force of 9 x 10 N, is known as__________?
- If a third equal and similar charge is placed between two equal and similar charges, then this third charge will__________?
- Which of the following capacitors preferred for high frequency circuits ?
- In order to remove static electricity from machinery__________?
- A region around a stationary electric charge has__________?
- Dielectric strength of a medium is usually expressed in__________?
- Which is the most superior dielectric out of the following ?
- To prevent the generation of static charges on rubber or flat leather__________?
- A capacitance is a circuit component that opposes the change in circuit__________?
- In a capacitor, the electric charge is stored in_________?
- The minimum value of potential gradient in a cable occurs in__________?
- Dielectric strength of medium__________?
- A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is__________?
- What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it__________ ?
- A capacitor consists of two__________?
- The time constant and R-C circuit may also be defined as the time during which the charging current falls to ________ percent of its initial maximum value
- at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point ?
- A single core cable used on 33000 V has conductor diameter 10 mm and the internal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is__________?
- capacitors are used for audio frequency and radio frequency coupling and tuning ?
- The units of volume charge density are__________?
- Which of the following capacitors will have the least value of breakdown voltage________ ?
- Which capacitor will be physically smaller for the same ratings __________?
- A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance _______?
- The capacity of capacitor bank used in power factor correction is expressed in terms of__________?
- The relative permittivity of free space is given by__________?
- A gang condenser is a__________?
- The unit of capacitance is__________?