Vidyalelo
Computer Science · all questions

Electronic Principles
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

235

Questions

4/12

Page

Pick an option on a question to see the right answer and solution.

The direction of electron current flow is:

Select an option to see the answer and solution.

A device that converts mechanical pressure to electrical energy is called a:

Select an option to see the answer and solution.

Which one of the following statements is true for the voltage in a parallel RC circuit?

Select an option to see the answer and solution.

The Thevenin resistance is equal in value to the

Select an option to see the answer and solution.

Most AC power is obtained from:

Select an option to see the answer and solution.

The value of a capacitor can be made larger by:

Select an option to see the answer and solution.

The value of a capacitor can be made larger by:

Select an option to see the answer and solution.

The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio?

Select an option to see the answer and solution.

Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?

Select an option to see the answer and solution.

Electron current is flowing through a conductor in a direction you might describe as straight into this page. What is the direction of the resulting magnetic field?

Select an option to see the answer and solution.

Which one of the following principles best describes the basic operation of an electromagnet?

Select an option to see the answer and solution.

The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?

Select an option to see the answer and solution.

Current and voltage are said to be in phase when:

Select an option to see the answer and solution.

Silicon atoms combine into an orderly pattern called a

Select an option to see the answer and solution.

The rotating coil of wire in an electric motor is called the:

Select an option to see the answer and solution.

The north pole of a magnet is the one:

Select an option to see the answer and solution.

A resistor has a rated value of 100 ohm and a tolerance of 10%. What is its minimum and maximum allowable resistance value?

Select an option to see the answer and solution.

When a parallel RLC circuit is operating at its resonant frequency:

Select an option to see the answer and solution.

For normal operation of the transistor, the collector diode has to be

Select an option to see the answer and solution.

In a step-down transformer, which is larger?

Select an option to see the answer and solution.