MATERIALS AND COMPONENTS QUIZ

Electrical contact materials used in switches, brushes, relay must possess

High thermal conductivity and low melting point

Low thermal conductivity and low melting pointL

Low thermal conductivity and high melting point

High thermal conductivity and high melting point

TRUE ANSWER : ?
YOUR ANSWER : ?

The most important set of specifications of transformer oil include

flash point and viscosity

viscosity and flash point

dielectric strength and viscosity

dielectric strength and flash point

TRUE ANSWER : ?
YOUR ANSWER : ?

Nickel is a non-magnetic material.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

Schrodinger wave equation is a

None of these

Linear equation

Partial differential equation

Differential equation

TRUE ANSWER : ?
YOUR ANSWER : ?

The residual resistivity of a binary alloy at 0 K is

Dependent on the concentration of minor component in the alloy

Product of residual resistivities of component metals

Sum of residual resistivities of component metals

Difference of residual resistivities of component metals

TRUE ANSWER : ?
YOUR ANSWER : ?

The number of protons in a silicon atom are

8

12

4

14

TRUE ANSWER : ?
YOUR ANSWER : ?

Wood is a diamagnetic material.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

Electric dipole moment is expressed in debye unit.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as

Onne’s rule

Matthiessen’s rule

Curie rule

Debye rule

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 : ?