Which of the following are true for relative dielectric constant?1. It is dimensionless.2. It is equal to 1 for vacuum.3. It is equal to 1 for all substances. 1 and 3 only 1 and 2 only 2 and 3 only 1, 2 and 3 TRUE ANSWER : ? YOUR ANSWER : ?
As the viscosity of a liquid increases, the relaxation time Decreases Increases First decreases then increases Remains constant TRUE ANSWER : ? YOUR ANSWER : ?
Which inductor is used at high frequencies? Cast iron cored Iron alloy cored Sheet steel cored Ceramic cored TRUE ANSWER : ? YOUR ANSWER : ?
Debye temperature of metals is About 10 K About 2 K About 200 K About 600 K TRUE ANSWER : ? YOUR ANSWER : ?
When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability. False True TRUE ANSWER : ? YOUR ANSWER : ?
Spontaneous magnetisation is characteristic of ferromagnetic materials. False True TRUE ANSWER : ? YOUR ANSWER : ?
Which inductor is linear? Iron alloy cored Cast iron cored Sheet steel cored Air cored TRUE ANSWER : ? YOUR ANSWER : ?
A leakage capacitor can be represented by a capacitance C and resistance R in parallel C. True False TRUE ANSWER : ? YOUR ANSWER : ?