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Day 11 Inverter, Rectifier, Semiconductor

Total questions: 31

Worksheet time: 15mins

Name
Class
Date
1.

Inverter

a)
An inverter converts AC to DC.
b)
An inverter is a type of battery.
c)
An inverter is used to charge batteries.
d)
An inverter converts DC to AC.
2.

Rectifier

a)
Converts AC to DC
b)
Amplifies AC signal
c)
Regulates DC voltage
d)
Inverts DC to AC
3.

Name the two types of aircraft inverters?

a)
Static Inverters and Rotary Inverters
b)
Digital Inverters
c)
Analog Inverters
d)
Dynamic Inverters
4.

Varactor

a)
A varactor is a type of inductor used in radio frequency circuits.
b)
A varactor is a type of diode that acts as a voltage-controlled capacitor.
c)
A varactor is a type of resistor used in power circuits.
d)
A varactor is a type of transistor used in digital logic circuits.
5.

In a forward biased PN junction or diode, the negative voltage source is connected to the _____ material.

a)
P-type
b)
D-type
c)
N-type
d)
C-type
6.

What are used to filter circuit?

a)
Capacitors and resistors
b)
Transistors and resistors
c)
Resistors and diodes
d)
Inductors and capacitors
7.

What is the most common type of transistor configuration?

a)
Common emitter
b)
Common collector
c)
Common base
d)
Common drain
8.

PNP or NPN: Which one majority of carriers are Holes?

a)
NPN
b)
PNP
9.

What are the three regions of a transistor?

a)

iny, miny, mo

b)

source, gate, base

c)

tic, tac, toe

d)
emitter, base, collector
10.

Delta connections are in series or parallel?

a)
series
b)
diagonal
c)
zigzag
d)
parallel
11.

Full Wave Rectifier?

a)
A full wave rectifier converts negative half of an AC input signal into a DC output signal.
b)
A full wave rectifier converts only positive half of an AC input signal into a DC output signal.
c)
A full wave rectifier converts AC signal into an AC output signal.
d)
A full wave rectifier converts both positive and negative halves of an AC input signal into a DC output signal.
12.

Half wave rectifier?

a)
A half wave rectifier is a circuit that converts only one half of the input AC signal into DC signal.
b)
A half wave rectifier is used to amplify the input AC signal.
c)
A half wave rectifier is a circuit that converts the entire input AC signal into DC signal.
d)
A full wave rectifier converts both halves of the input AC signal into DC signal.
13.

Most semiconductors are made of:

a)

copper and silver

b)

gold and platinum

c)

aluminum and silver

d)

silicon and germanium

14.

Semiconductors atoms share one electron forming what type of bond?

a)
Hydrogen bond
b)
Metallic bond
c)
Covalent bond
d)
Ionic bond
15.

Static inverter has replaced the rotary inverter in most applications due to it:

a)

Being more efficient

b)

low maintenance, long life

c)

able to start under load

d)

All of the answers are correct

16.

Types of diodes used in lighting system and display

a)

LED

b)

zener diodes

c)

rectifier diodes

d)

schottky

17.

Types of diodes used in lighting system and display

a)

LED

b)

zener diodes

c)

rectifier diodes

d)

schottky

18.

The region on either side of the junction which becomes free from the mobile charge carriers is called

a)

Energy gap region

b)

Charge free region

c)

Diffusion region

d)

Depletion region

19.
2. The forbiddenn energy gap for Germanium is of the order of
a)
(a) 0.7 eV
b)
(b) 0.3 eV
c)
(c) 1.1 eV
d)
(d) 10 eV
20.

Materials which can conduct electricity better than insulator,but not as well as conductors. This is the definition of

a)

diode

b)

semiconductor

c)

conductor

d)

insulator

e)

superconductor

21.

what is a diodes function

a)

allows current to flow in one direction

b)

allows current to flow in two directions

c)

is a resistor

22.

Which component of a circuit is used to measure current?

a)
b)
c)
d)
23.

Frequency is measured in?

a)

Seconds

b)

Hertz

c)

Henries

d)

Farads

24.

Capacitance is measured in?

a)

Seconds

b)

Hertz

c)

Henries

d)

Farads

25.

Inductance is measured in?

a)

Seconds

b)

Hertz

c)

Henries

d)

Farads

26.

Capacitive Reactance is measured in?

a)

Amps

b)

Volts

c)

Ohms

d)

Watts

27.

Inductive Reactance is measured in?

a)

Amps

b)

Ohms

c)

Volts

d)

Watts

28.

The total opposition to current caused by reactive AND resistive devices is called?

a)

Current

b)

Reactance

c)

Resistance

d)

Impedance

29.

Impedance is measured in?

a)

Amps

b)

Ohms

c)

Volts

d)

Watts

30.

What formula is pictured?

a)

Inductive Reactance

b)

Capacitive Reactance

c)

Series Z

d)

Parallel Z

31.

What formula is pictured?

a)

Inductive Reactance

b)

Capacitive Reactance

c)

Z in Series

d)

Z in parallel

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