A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity

Electromagnetic Field Theory
A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity

less than that of disc and in the same direction.

equal to that of disc and in the opposite direction.

less than that of disc but in opposite direction.

equal to that of disc and in the same direction.

less than that of disc and in the same direction.

equal to that of disc and in the opposite direction.

less than that of disc but in opposite direction.

equal to that of disc and in the same direction.

ANSWER DOWNLOAD EXAMIANS APP

Electromagnetic Field Theory
The main purpose of choke is

to pass high frequencies.

to block low frequencies.

none of above.

to pass low frequencies.

to pass high frequencies.

to block low frequencies.

none of above.

to pass low frequencies.

ANSWER DOWNLOAD EXAMIANS APP

Electromagnetic Field Theory
Two parallel plates are separated by a distance D charged by V volt. The field intensity E is given by,

V² / D

V × D

V / D

V × D²

V² / D

V × D

V / D

V × D²

ANSWER DOWNLOAD EXAMIANS APP

Electromagnetic Field Theory
Which of following is true for a purely inductive circuit ?

Reactive power of the circuit is zero.

Actual power of the circuit is zero.

Apparent power of the circuit is zero.

Any capacitance even if present in the circuit will not be charged.

Reactive power of the circuit is zero.

Actual power of the circuit is zero.

Apparent power of the circuit is zero.

Any capacitance even if present in the circuit will not be charged.

ANSWER DOWNLOAD EXAMIANS APP

Electromagnetic Field Theory
A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by

4t3.

12t3.

24t.

12t.

4t3.

12t3.

24t.

12t.

ANSWER DOWNLOAD EXAMIANS APP

Electromagnetic Field Theory
Skin depth is proportional to

Frequency.

1/√σ.

Permeability.

√(σ).

Frequency.

1/√σ.

Permeability.

√(σ).

ANSWER DOWNLOAD EXAMIANS APP

Electromagnetic Field Theory

Electromagnetic Field Theory A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity

Electromagnetic Field Theory The main purpose of choke is

Electromagnetic Field Theory Two parallel plates are separated by a distance D charged by V volt. The field intensity E is given by,

Electromagnetic Field Theory Which of following is true for a purely inductive circuit ?

Electromagnetic Field Theory A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by

Electromagnetic Field Theory Skin depth is proportional to

Electromagnetic Field Theory
A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity

Electromagnetic Field Theory
The main purpose of choke is

Electromagnetic Field Theory
Two parallel plates are separated by a distance D charged by V volt. The field intensity E is given by,

Electromagnetic Field Theory
Which of following is true for a purely inductive circuit ?

Electromagnetic Field Theory
A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by

Electromagnetic Field Theory
Skin depth is proportional to