SECOND QUARTER PERIODICAL TEST in ELECTRONICS

Quiz by Margarita Salaria

Science

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50 questions
• Q1

What is the charge of an anode?

none of the above

neutral

NEGATIVE

positive

30s
• Q2

Which of the following statements is correct?

The reverse diode in biased has high conductivity.

A diode in reverse bias has very high resistance.

The diode is a superconductor.

When a diode is in forward bias the resistance is very low.

30s
• Q3

What does the Moore Law state?

The number of transistors per square inch on an integrated circuit doubles every 2 years

The number of transistors per square inch on an integrated circuit triples every 2 years.

The number of transistors per square inch on an integrated circuit reduces by half every 2 years.

The number of transistors per square inch on an integrated circuit quadruples every 2 years.

30s
• Q4

What is an integrated circuit replacing?

Vacuum Tubes

Amplifiers

Inductors

Light Emitting Diodes

30s
• Q5

Which is NOT true about integrated circuits?

All of these.

It can be used in high voltage.

ICs are energy efficient.

It requires less power.

30s
• Q6

A bipolar junction transistor has __________.

three p-n junctions

only one p-n junction

two p-n junctions

no p-n junctions

30s
• Q7

To make diode in forward bias,

the anode voltage must be positive with respect to its cathode.

the anode voltage must be negative with respect to its cathode

either a or b.

the cathode voltage must be positive with respect to its anode

30s
• Q8

What inhibits the movement of ions in the depletion region?

potential barrier

electric field and potential barrier

electric field only

gravitational field

30s
• Q9

What happens to the depletion region when the diode is in forward bias?

It narrows and does not allow an electric current to flow.

It narrows and allows electric current to flow.

It widens and does not allow an electric current to flow.

It widens and allows electric current to flow.

30s
• Q10

What will happen to the electric current passing a NPN transistor if the voltage at the emitter VE is less than the voltage at the collector VC by at least a few tenths of a volt?

The voltage must be equal for the electric current to flow.

The transistor acts as an open switch and will not allow current to flow.

The transistor acts as a closed switch allowing the current to flow.

both b and c

30s
• Q11

What is the name of the electronic circuit that is composed of individual components such as resistors, capacitors, transistors, and diodes?

circuit board

chassis

integrated circuit

discrete circuit

30s
• Q12

The instructions contained in a computer program are stored in which type of computer memory while the program is being used?

CD

ROM

RAM

floppy disk

30s
• Q13

In a transistor, which is the largest of all the doped regions?

the gate region

the base region

the emitter region

the collector region

30s
• Q14

How can the duty cycle be changed for an astable multivibrator?

By adding diodes to the circuit.

By adding another capacitor to the circuit.

The duty cycle cannot be changed.

By adding an inductor to the circuit.

30s
• Q15

What is a square wave generator?

Monostablemultivibrator

Astable multivibrator

Flip-flop

Bi-stable multivibrator

30s

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