Alternating Current Test

Result

Alternating Current Test - 17

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

An inductance of 1 mH a condenser of 10μF and a resistance of 50Ω are connected in series. The reactances of inductor and condensers are same. The reactance of either of them will be

A
100Ω

B
30 Ω

C
3.2 Ω

D
10Ω

Solution
Question 2
4 / -1

An ac circuit consists of an inductor of inductance 0.5 H and a capacitor of capacitance 8μF in series. The current in the circuit is maximum when the angular frequency of ac source is

A
500 rad/sec

B
2 × 10⁵ rad/sec

C
4000 rad/sec

D
5000 rad/sec

Solution
Question 3
4 / -1

In a region of uniform magnetic induction B = 10^-2 tesla, a circular coil of radius 30 cm and resistance π² ohm is rotated about an axis which is perpendicular to the direction of B and which forms a diameter of the coil. If the coil rotates at 200 rpm the amplitude of the alternating current induced in the coil is

A
4π² mA

B
30 mA

C
6 mA

D
200 mA

Solution
Question 4
4 / -1

In a LCR circuit having L = 8.0 henry, C = 0.5 μF and R = 100 ohm in series. The resonance frequency in per second is

A
600 radian

B
600 Hz

C
500 radian

D
500 Hz

Solution
Question 5
4 / -1

The impedance of a circuit consists of 3 ohm resistance and 4 ohm reactance. The power factor of the circuit is

A
0.4

B
0.6

C
0.8

D
1.0

Solution
Question 6
4 / -1

L, C and R denote inductance, capacitance and resistance respectively. Pick out the combination which does not have the dimensions of frequency

A

B

C

D
Question 7
4 / -1

The power factor of a good choke coil is

A
Nearly zero

B
Exactly zero

C
Nearly one

D
Exactly one

Solution
Question 8
4 / -1

An alternating current source of frequency 100 Hz is joined to a combination of a resistance, a capacitance and a coil in series. The potential difference across the coil, the resistance and the capacitor is 46, 8 and 40 volt respectively. The electromotive force of alternating current source in volt is

A
94

B
14

C
10

D
76

Solution
Question 9
4 / -1

L, C and R represent physical quantities inductance, capacitance and resistance respectively. The combination representing dimension of frequency is

A
LC

B

C

D

Solution
Question 10
4 / -1

In a series circuit R = 300Ω, L = 0.9 H, C = 2.0µF and ω = 1000 rad/sec. The impedance of the circuit is

A
1300Ω

B
900Ω

C
500Ω

D
400Ω

Solution