Test: Inductive & Non-Inductive Circuits

# Test: Inductive & Non-Inductive Circuits

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## 10 Questions MCQ Test Basic Electrical Technology | Test: Inductive & Non-Inductive Circuits

Test: Inductive & Non-Inductive Circuits for Electrical Engineering (EE) 2023 is part of Basic Electrical Technology preparation. The Test: Inductive & Non-Inductive Circuits questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Inductive & Non-Inductive Circuits MCQs are made for Electrical Engineering (EE) 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Inductive & Non-Inductive Circuits below.
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Test: Inductive & Non-Inductive Circuits - Question 1

### In case of Inductive circuit, Frequency is ______________ to the inductance.

Detailed Solution for Test: Inductive & Non-Inductive Circuits - Question 1

The formula for frequency in an inductive circuit is:
XL=2*π*f*L.
Therefore: f is inversely proportional to L.

Test: Inductive & Non-Inductive Circuits - Question 2

### In case of Inductive circuit, Frequency is ______________ to the current.

Detailed Solution for Test: Inductive & Non-Inductive Circuits - Question 2

Inductance is inversely proportional to current since, as the inductance increases, current decreases.

Test: Inductive & Non-Inductive Circuits - Question 3

### In an inductive circuit, when the impedance value increases, the circuit power factor?

Detailed Solution for Test: Inductive & Non-Inductive Circuits - Question 3

The power factor, that is, cos(phi) is equal to the resistance divided by the impedance in the circuit, hence as impedance increases, the power factor decreases.

Test: Inductive & Non-Inductive Circuits - Question 4

If the current and voltage are 90 degree out of phase, the power factor will be?

Detailed Solution for Test: Inductive & Non-Inductive Circuits - Question 4

The power factor is the cosine of the angle in between the voltage and the current. If the angle between the voltage and current is 90, then cos90=0. Hence, the power factor is zero.

Test: Inductive & Non-Inductive Circuits - Question 5

In a pure inductive circuit, the power factor is __________

Detailed Solution for Test: Inductive & Non-Inductive Circuits - Question 5

In a pure inductive circuit, current is lagging by 90 degrees from the voltage. The power factor is the cosine of the angle in between the voltage and the current. If the angle between the voltage and current is 90, then cos90=0. Hence, the power factor is zero.

Test: Inductive & Non-Inductive Circuits - Question 6

If the power factor is 1/10 and the value of inductive reactance is 20 ohm, calculate the resistance in the circuit.

Detailed Solution for Test: Inductive & Non-Inductive Circuits - Question 6

We know that:
cos(φ)=R/Z

given Z = 20 ohm, cos(φ) = 1/10

so R comes out to be 2 ohm.

Test: Inductive & Non-Inductive Circuits - Question 7

If the resistance in a circuit is 2 ohm and the impedance is 20 ohm, calculate the power factor.

Detailed Solution for Test: Inductive & Non-Inductive Circuits - Question 7

We know that:
cos(ϕ) = R/Z = 2/20 = 1/10 ohm.

Test: Inductive & Non-Inductive Circuits - Question 8

If the power factor is 1/10 and the resistance is 2 ohm, calculate the impedance.

Detailed Solution for Test: Inductive & Non-Inductive Circuits - Question 8

We know that:
cos(phi) = R/Z
From the given question, we find that the inductive reactance is 20 ohm.

Test: Inductive & Non-Inductive Circuits - Question 9

What is the unit for inductive reactance?

Detailed Solution for Test: Inductive & Non-Inductive Circuits - Question 9

Inductive reactance is nothing but the impedance. Impedance is the AC equivalent of resistance, hence the unit for inductive reactance is ohm.

Test: Inductive & Non-Inductive Circuits - Question 10

An induced emf is said to be ________

Detailed Solution for Test: Inductive & Non-Inductive Circuits - Question 10

Any circuit in which a change of current is accompanied by a change of flux, and therefore by an induced emf, is said to be inductive.

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