Alternating Current Test

Question 1
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): An alternating current does not show any magnetic effect.
Reason (R): Alternating current changes direction with time.

A
A. Both A and R are true and R is the correct explanation of A

B
B. Both A and R are true but R is NOT the correct explanation of A

C
C. A is true but R is false

D
D. A is false and R is true

Question 2
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): V_RMS value of an alternating voltage V = 4√2 sin 314t is 4 volt.
Reason (R): Peak value of the alternating voltage is 4√2 volt.

A
A. Both A and R are true and R is the correct explanation of A

B
B. Both A and R are true but R is NOT the correct explanation of A

C
C. A is true but R is false

D
D. A is false and R is true

Question 3
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): The dimension of L/R is time.
Reason (R): Time constant (L/R) should be increased to reduce the rate of increase of current through a solenoid.

A
A. Both A and R are true and R is the correct explanation of A

B
B. Both A and R are true but R is NOT the correct explanation of A

C
C. A is true but R is false

D
D. A is false and R is true

Question 4
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): When capacitive reactance is less than the inductive reactance in a series LCR circuit, e.m.f. leads the current.
Reason (R): The angle by which alternating voltage leads the alternating current in series RLC circuit is given by tan φ = X_L - X_C /R.

A
A. Both A and R are true and R is the correct explanation of A

B
B. Both A and R are true but R is NOT the correct explanation of A

C
C. A is true but R is false

D
D. A is false and R is true

Question 5
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Principle of operation of AC generator is electromagnetic induction.
Reason (R): Resistance offered by inductor for AC is zero.

A
A. Both A and R are true and R is the correct explanation of A

B
B. Both A and R are true but R is NOT the correct explanation of A

C
C. A is true but R is false

D
D. A is false and R is true

Question 6
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Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): A transformer does not work on DC.
Reason (R): DC neither change direction nor magnitude.

A
A. Both A and R are true and R is the correct explanation of A

B
B. Both A and R are true but R is NOT the correct explanation of A

C
C. A is true but R is false

D
D. A is false and R is true

Question 7
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion: In series LCR circuit resonance can take place.
Reason: Resonance takes place if inductance and capacitive reactances are equal and opposite.

A
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C
C. If assertion is true but reason is false.

D
D. If the assertion and reason both are false.

Question 8
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion: Capacitor serves as a block for dc and offers an easy path to ac.
Reason: Capacitive reactance is inversely proportional to frequency.

A
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C
C. If assertion is true but reason is false.

D
D. If the assertion and reason both are false.

Question 9
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion: Chock coil is preferred over a resistor to adjust current in an ac circuit.
Reason: Power factor for inductance is zero.

A
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C
C. If assertion is true but reason is false.

D
D. If the assertion and reason both are false.

Question 10
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion: A bulb connected in series with a solenoid is connected to ac source. If a soft iron core is introduced in the solenoid, the bulb will glow brighter.
Reason: On introducing soft iron core in the solenoid, the inductance increases.

A
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B
B. If assertion is false but reason is true.

C
C. If both assertion and reason are true but reason is not the correct explanation of the assertion.

D
D. If assertion is true but reason is false.

Question 11
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion: The dc and ac both can be measured by a hot wire instrument.
Reason: The hot wire instrument is based on the principle of magnetic effect of current.

A
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C
C. If assertion is true but reason is false.

D
D. If the assertion and reason both are false.

Question 12
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion: Average value of ac over a complete cycle is always zero.
Reason: Average value of ac is always defined over half cycle.

A
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C
C. If assertion is true but reason is false.

D
D. If the assertion and reason both are false.

Question 13
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion: When ac circuit contain resistor only, its power is minimum.
Reason: Power of a circuit is independent of phase angle.

A
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C
C. If assertion is true but reason is false.

D
D. If the assertion and reason both are false.

Question 14
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion: A capacitor of suitable capacitance can be used in an ac circuit in place of the choke coil.
Reason: A capacitor blocks dc and allows ac only.

A
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C
C. If assertion is true but reason is false.

D
D. If the assertion and reason both are false.

Question 15
1 / -0

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion: Average power in series LCR ac circuit is maximum at resonance.
Reason: At the resonance circuit is purely resistive.

A
A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion

B
B. If both Assertion & Reasons are true but the reason is not the correct explanation of the assertion

C
C. If Assertion is a true statement but the reason is false

D
D. If both Assertion and Reason are false statements

Submit Test

Alternating Cur...

Question 1

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is NOT the correct explanation of A

C. A is true but R is false

D. A is false and R is true

Question 2

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is NOT the correct explanation of A

C. A is true but R is false

D. A is false and R is true

Question 3

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is NOT the correct explanation of A

C. A is true but R is false

D. A is false and R is true

Question 4

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is NOT the correct explanation of A

C. A is true but R is false

D. A is false and R is true

Question 5

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is NOT the correct explanation of A

C. A is true but R is false

D. A is false and R is true

Question 6

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is NOT the correct explanation of A

C. A is true but R is false

D. A is false and R is true

Question 7

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C. If assertion is true but reason is false.

D. If the assertion and reason both are false.

Question 8

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C. If assertion is true but reason is false.

D. If the assertion and reason both are false.

Question 9

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C. If assertion is true but reason is false.

D. If the assertion and reason both are false.

Question 10

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B. If assertion is false but reason is true.

C. If both assertion and reason are true but reason is not the correct explanation of the assertion.

D. If assertion is true but reason is false.

Question 11

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C. If assertion is true but reason is false.

D. If the assertion and reason both are false.

Question 12

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C. If assertion is true but reason is false.

D. If the assertion and reason both are false.

Question 13

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C. If assertion is true but reason is false.

D. If the assertion and reason both are false.

Question 14

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

C. If assertion is true but reason is false.

D. If the assertion and reason both are false.

Question 15

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion

B. If both Assertion & Reasons are true but the reason is not the correct explanation of the assertion

C. If Assertion is a true statement but the reason is false

D. If both Assertion and Reason are false statements

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Question Analysis

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