Question # 1

An in cudutor may store energy in

Choose an answer

Its magnetic field

Its coil

Its electric field

A neighboring circuit

The highest value reached by the voltage or current in one cycle is called.

Choose an answer

Peak ot peak value

Peak value

Instantaneous value

Root mean square value

Impedance is denoted by:

Choose an answer

A

Z

P

Q

The value of capacitive reactance is given by

Choose an answer

Xc = VI

All of above

In case of capacitor, the unit of reactance is

Choose an answer

Farad

Ohm

Newton

All of these

SI unit of reactance is.

Choose an answer

Ohm

Mho

Farad

Henry

The circuit in which current and voltage are in phase, the power factor is:

Choose an answer

Zero

1

-1

2

The combined effect of resistance and reactance in circuit is called:

Choose an answer

Impedance

Inductance

Capacitance

None of above

In chopke coil the resistance X_L an resistance R are:

Choose an answer

X_L=R

X_L<<R

X_L>>R

X_L=∞

Main reason for world wide use of A.C. is

Choose an answer

It is cheaper

Transmitted

Botha a and b

Reaches in short time

The Basic circuit element in a D.C. circuits which controls the current and voltage is

Choose an answer

Resistor

Inductor

Capisitor

Transistor

The highest value reached by the voltage or current is one cycle is called:

Choose an answer

Peak to peak value

Peak value

Instantaneous value

Root mean square value

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

Choose an answer

50 Hz

25Hz

100 Hz

75 Hz

In frequency modulation which factor changed.

Choose an answer

Amplitude of charge carriers

Frequency of charge carriers

Amplitude of signal

Frequency of signal

The reactance is the ratio of

Choose an answer

V_rms/I_rms

V_rms x I_rms

I_rms/V_rms

V_max x V_rms

The peak value of A.C source is 20 A, then its rms value will be.

Choose an answer

14.1 A

10 A

20 A

28.2 A

Electron vibrating 94,000 times each second will produce radio waves of frequency.

Choose an answer

94 Hz

940 HZ

94 Hz

490 Hz

In a pure inductive A.C. circuit the current.

Choose an answer

Lags behind voltage by 90 ^o

Leads the voltage by 90 ^o

In phase with voltage

Leads the voltage by 270 ^o

More Classes

Other Links

Ics Part 2 Physics Chapter 5 Test Online MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer