AUTOMATIC CONTROL SYSTEMS QUIZ

If the number of atoms per unit volume of a monoatomic gas changes, the dielectric constant still remains constant.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

Schrodinger wave equation is a

Differential equation

Partial differential equation

None of these

Linear equation

TRUE ANSWER : ?
YOUR ANSWER : ?

The merger of hole and free electron is called

Covalent bonding

Recombination

Thermal energy

Free electrons

TRUE ANSWER : ?
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Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is

Normal to both current and magnetic field

In a direction anti parallel to magnetic field

None of these

In the same direction as current

TRUE ANSWER : ?
YOUR ANSWER : ?

The dielectric losses do not depend on frequency.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

Ferrimagnetic materials have anti parallel orientation of equal moments of permanent dipoles.

False

True

TRUE ANSWER : ?
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The fact that domains exhibits spontaneous magnetisation is

Curie-Weiss law

Boltzmann’s statistics

First hypothesis is of Curie

Second hypothesis is of Weiss

TRUE ANSWER : ?
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With increase in temperature, the electrical conductivity would

Decrease in metals as well as in intrinsic semiconductor

Increase in metals as well as in intrinsic semiconductor

Increase in metals but decrease in intrinsic semiconductor

Decrease in metals but increase in intrinsic semiconductor

TRUE ANSWER : ?
YOUR ANSWER : ?

The phenomenon of dielectric hysteresis occurs with

Both AC and DC

None of these

AC

DC

TRUE ANSWER : ?
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A vacant electronic state moves in the same direction as would a positive charge carrier.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?