ELECTRONIC PRINCIPLES QUIZ

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

None of these

The current always has the same amplitude and phase for every part of the circuit

The total current. is greater than the sum of the currents for the resistance and capacitance

The total current is less than the sum of the currents for the resistance and capacitance

The total current is equal to the sum of the currents for the resistance and capacitance

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the barrier potential of a silicon diode at room temperature?

2 m V per degree Celsius

1 V

0.3V

None of these

0.7V

TRUE ANSWER : ?
YOUR ANSWER : ?

Inductive reactance is measured in units of:

volts per second

henrys

Ohm

amperes per second

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage?

30 V

12 V

None of these

18 V

24 V

TRUE ANSWER : ?
YOUR ANSWER : ?

What form of energy is used for creating static electricity?

Chemical energy

Light energy

None of these

Mechanical energy

Solar energy

TRUE ANSWER : ?
YOUR ANSWER : ?

An ideal voltage source has

None of these

A load-dependent current

A load dependent voltage

Zero internal resistance

Infinite internal resistance

TRUE ANSWER : ?
YOUR ANSWER : ?

A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns?

1000 A

100 A

0.41666666666667

None of these

0.1 A

TRUE ANSWER : ?
YOUR ANSWER : ?

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

200 W

1000 W

20 W

None of these

100 W

TRUE ANSWER : ?
YOUR ANSWER : ?

The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current?

17.5 mA

1750 mA

1.75 mA

None of these

175 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

A device that converts chemical energy to electrical energy is called a:

thermocouple

solar cell

electric device

chemical cell

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?