Free Printable M3 Electrical fundamentals Cat A

1.

What are the particles that are in the nucleus of an atom?

a)

protons and neutrons

b)

electrons and neutrons

c)

protons and electrons

d)

protons and electrons and neutrons

2.

what is the charge on a neutron?

a)

1

b)

2

c)

0

d)

-1

3.

What charge does an electron carry?

a)

Negative

b)

No charge

c)

Neutral

d)

Positive

4.

A material that allows the free movement of electrons is called

a)

conductor

b)

resistor

c)

semiconductor

d)

insulator

5.

In coulombs, what charge does a proton carry?

a)

$+1.602\times10^{-19}$

b)

$-1.602\times10^{19}$

c)

0

d)

$-1.602\times10^{-19}$

6.

A material that uses doping to increase conductivity is known as

a)

conductor

b)

insulator

c)

semiconductor

d)

superconductor

7.

A material the electrons are tightly bonded to the atom/molecule is know as

a)

metal

b)

semiconductor

c)

conductor

d)

insulator

8.

The decomposition of chemical compounds by passing an electric current through a liquid is called

a)

electrolysis

b)

electroplating

c)

electromagnetism

d)

electrostatics

9.

When crystal bonds are broken in a semi-conductor. The breaking of bonds releases

a)

an electrons and a proton

b)

a neutron and a hole

c)

a photon and an electron

d)

an electron and a hole

10.

What happens to water when an electric current is applied?

a)

Water turns into steam.

b)

Water freezes into ice.

c)

Water evaporates into the air.

d)

Water molecules decompose into hydrogen and oxygen gases.

11.

When using a liquid as a conductor, what is the liquid generally known as?

a)

conductor

b)

solution

c)

electrolyte

d)

compound

12.

An electron beam uses what medium as a conductor?

a)

semi-conductor

b)

liquid

c)

copper

d)

vacuum

13.

If 3 cells of 1.5V with an internal resistance of $1\Omega$ are connected in parallel what would the total voltage be?

a)

3V

b)

1.5V

c)

0.5V

d)

4.5V

14.

If 4 cells of 3V with an internal resistance of $1\Omega$ are connected in series, what would the total voltage be?

a)

3V

b)

12V

c)

6V

d)

9V

15.

What name is give to a positive ion?

a)

electron

b)

neutron

c)

cation

d)

anion

16.

If you're give an RMS value how would you calculate the peak value?

a)

$Peakvalue=\frac{RMSvalue}{\sqrt[]{2}}$

b)

$Peakvalue=RMSvalue+\sqrt{2}.$

c)

$Peakvalue=RMSvalue\times\sqrt{2}$

d)

$Peakvalue=RMSvalue-\sqrt{2}$

17.

The frequency f of a wave is

a)

The amplitude of the wave.

b)

The speed at which the wave travels.

c)

The distance between two consecutive crests of the wave.

d)

Number of complete cycles of the wave that occur in one second

18.

Phase difference describes

a)

the difference in phase between two waves or oscillations

b)

the difference in wavelength between two waves or oscillations.

c)

the difference in amplitude between two waves or oscillations.

d)

the difference in frequency between two waves or oscillations.

19.

The period (T) of a wave is

a)

The time it takes for one complete cycle of the wave to pass a given point.

b)

The amplitude of the wave.

c)

The speed at which the wave travels through a medium.

20.

If all 3 phases of a generator where connected together, what would happen?

a)

Short circuit

b)

Overload.

c)

Voltage drop.

d)

Open circuit.

M3 Electrical fundamentals Cat A

Total questions: 20

Worksheet time: 10mins

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