Alternating Current NAT Level - 1

# Alternating Current NAT Level - 1

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## 10 Questions MCQ Test Topic wise Tests for IIT JAM Physics | Alternating Current NAT Level - 1

Alternating Current NAT Level - 1 for Physics 2022 is part of Topic wise Tests for IIT JAM Physics preparation. The Alternating Current NAT Level - 1 questions and answers have been prepared according to the Physics exam syllabus.The Alternating Current NAT Level - 1 MCQs are made for Physics 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Alternating Current NAT Level - 1 below.
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*Answer can only contain numeric values
Alternating Current NAT Level - 1 - Question 1

### In an ac circuit, V and I are given by V = 100 sin 100t volts, I = 100 sin  The power dissipated (in Watts) in circuit is

Detailed Solution for Alternating Current NAT Level - 1 - Question 1

The correct answer is: 2.5

*Answer can only contain numeric values
Alternating Current NAT Level - 1 - Question 2

### In the circuit shown below, the ac source has voltage V = 20cos(ωt) Volts with ω = 2000 the amplitude of the current (in Amperes) will be nearest to

Detailed Solution for Alternating Current NAT Level - 1 - Question 2

The correct answer is: 2

*Answer can only contain numeric values
Alternating Current NAT Level - 1 - Question 3

### The power factor of a good choke coil is nearly.

Detailed Solution for Alternating Current NAT Level - 1 - Question 3

Power factor of a good choke coil is 0

The correct answer is: 0

*Answer can only contain numeric values
Alternating Current NAT Level - 1 - Question 4

A coil of  200Ω resistance and 1.0H  inductance to an ac source of frequency 200/ 2π Hz. Phase angle (in degree) between potential and current will be

Detailed Solution for Alternating Current NAT Level - 1 - Question 4

The correct answer is: 45

*Answer can only contain numeric values
Alternating Current NAT Level - 1 - Question 5

When 100V  D.C. is applied across solenoid a current of 1.0A flows in it. When 100 V A.C. is applied across the same coil the current drops to 0.5A. If the frequency of the A.C. source is 50Hz, the impedance (in Ω) of the solenoid is.

Detailed Solution for Alternating Current NAT Level - 1 - Question 5

The correct answer is: 200

*Answer can only contain numeric values
Alternating Current NAT Level - 1 - Question 6

In the figure shown, a current of 2A flows in the circuit. The impedance (in Ω) of the circuit is

Detailed Solution for Alternating Current NAT Level - 1 - Question 6

The correct answer is: 130

*Answer can only contain numeric values
Alternating Current NAT Level - 1 - Question 7

In an ac circuit the current is given by i = 0.5sin(314t + 60º)mA. The peak to peak value of current is (in mA).

Detailed Solution for Alternating Current NAT Level - 1 - Question 7

Peak to Peak value of current is 1mA
The correct answer is: 1

*Answer can only contain numeric values
Alternating Current NAT Level - 1 - Question 8

A steady dc current of 2.83A is flowing in a resistance wire. The rms value of the current (in Amperes) is :

Detailed Solution for Alternating Current NAT Level - 1 - Question 8

The rms value of the current is 2.83A

The correct answer is: 2.83

*Answer can only contain numeric values
Alternating Current NAT Level - 1 - Question 9

In series LCR circuit the voltage across R, L and C are shown in figure. The Voltage (in Volts) of applied source is :

Detailed Solution for Alternating Current NAT Level - 1 - Question 9

The correct answer is: 50

*Answer can only contain numeric values
Alternating Current NAT Level - 1 - Question 10

The power factor of LCR circuit at resonance is

Detailed Solution for Alternating Current NAT Level - 1 - Question 10

Power Factor of LCR circuit at resonance is 1
The correct answer is: 1

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