Electronic Principles MCQ Questions & Answers

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Each section contains 100 MCQs on Electronic Principles .

What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm?

A) 60 Ohm B) 99.3 Ohm C) 250 Ohm D) 70.7Ohm E) None of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Current can flow through a normally open push button switch as long as:

A) you are pressing the button B) you are not pressing the button C) its contact remain open D) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Doubling the operating frequency of a purely capacitive circuit:

A) has no effect on the total circuit current B) doubles the amount of total current C) cuts the total current by one-half D) thrice the amount of total current E) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

How much current flows through a 0.02 micro F capacitor that is operating from a 12-V ac, 100-Hz source?

A) 0.151 mA B) 157 raA C) 0.995 mA D) 2.02 A E) None of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current?

A) 28.4 mA B) 24.2 mA C) 34.4 mA D) 68.4 mA E) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The total capacitance of a series capacitor circuit is:

A) equal to the sun of the individual capacitive-reactance values B) equal to the sum of the individual capacitance values C) equal to the source voltage divided by total current D) less than the value of the smallest capacitor E) None of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Assuming 100% efficiency, what is the power being applied to the primary winding of the transformer described in the above question?

A) 200 W B) 1000 W C) 20 W D) 100 W E) None of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

To get the Thevenin voltage, you have to

A) Short the load resistor B) Open the load resister C) Short the voltage source D) Open the voltage source E) None of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which one of the following properties of a magnetic circuit can be directly compared to resistance in an electrical circuit?

A) Reluctance B) Permeability C) Permeance D) Retentivity E) There is no valid comparison

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

How many types of flow are there in a semiconductor?

A) 0 B) 1 C) 2 D) 4 E) None of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Electronic Principles MCQ Questions & Answers | Computer Science