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WorksheetsM3 Cat A Mock
Total questions: 22
Worksheet time: 7mins
Name
Class
Date
1.
What charge is carried by an atom if there is a surplus of electrons?
a)
Positive
b)
Negative
c)
Neutral
2.
What are the different sub-atomic particles of an atom?
a)
Protons, ions and neutrons.
b)
Protons, neutrons and electrons.
c)
Protons, neutrons and shells.
3.
Metal is a good conductor of electricity, this is due to what?
a)
The high mobility of its electrons.
b)
The high mobility of its protons.
c)
The low mobility of its electrons.
4.
Which statement about electric charges is correct?
a)
Like charges attract each other.
b)
Unlike charges repel each other.
c)
Unlike charges attract each other.
5.
Which symbol is used for charge?
a)
R
b)
Q
c)
S
6.
What are Cations?
a)
Negatively charged Ions.
b)
Neutrally charged Ions.
c)
Positively charged Ions.
7.
What is the unit for the potential difference between two differently charged points?
a)
Ampere
b)
Volt
c)
Coulomb
8.
Which unit corresponds to 1000 Ohms (Ω) ?
a)
Microohms
b)
Kiloohms
c)
Milliohms
9.
What is the standard unit of electrical charge?
a)
Coulomb (C)
b)
Ampere (A)
c)
Volt (V)
10.
How is DC voltage defined?
a)
A voltage that maintains the same polarity over a period of time.
b)
A voltage that changes polarity with a constant size over a period of time.
c)
A voltage that constantly changes polarity and amplitude over a certain period of time.
11.
How many directions do all electrical charges flow within a DC electrical circuit?
a)
Three
b)
One
c)
Two
12.
Which symbol is indicating a low resistance value?
a)
μΩ
b)
GΩ
c)
kΩ
d)
TΩ
13.
If there is a voltage of 2 Volt across a resistor and a current of 1 Ampere through the resistor, what is the value of the resistor?
a)
20 Ω
b)
2 Ω
c)
0.5 Ω
d)
2kΩ
e)
1kΩ
14.
Which device produces voltage by means of pressure?
a)
Piezoelectric crystal element
b)
Photo cell
c)
Thermocouple
d)
Generator
15.
What is the generation of electricity by the use of magnetism called?
a)
Conductance
b)
Transformation
c)
Induction
16.
When will a voltage be generated by two different types of metal?
a)
When immersed in a solid
b)
When immersed in a gas
c)
When immersed in a liquid
17.
What is generated into a coil during its movement within a magnetic field?
a)
MMF
b)
EMF
c)
ADF
18.
What is the primary reason for static dischargers?
a)
They discharge the static build up created by friction caused by the aircraft tyres as it taxies.
b)
They discharge the static build up created by friction as the aircraft flies through the air.
c)
They charge up the aircraft battery by the static build up created by friction.
19.
Which of these devices is capable of producing a voltage by means of difference in temperature?
a)
Photo cell
b)
Thermocouple
c)
Silicon cell
20.
Which materials are usually used in modern aircraft thermocouples?
a)
Chromel and alumel
b)
Copper and aluminium
c)
Constantan and aluminium
21.
What is an advantage of a nickel-cadmium battery over a lead acid battery?
a)
Better power to weight ratio.
b)
Tolerates higher discharge currents.
c)
No charging is required.
22.
Which device can produce a voltage due to being exposed to light?
a)
Thermocouple
b)
Piezoelectric crystal element
c)
Photocell
d)
Thermometer
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