Unit 202 Revision #3
Authored by Duncan Brignell
Professional Development
Professional Development
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The mass of an object was measured as 110 grams. What is the weight of the object in Newtons?
1078N
1.078N
27.6N
1078kg
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The SI units of current, resistance & power are respectively
electron, resistivity and newton
ampere, ohm and joule
weber, ohm and watt
ampere, ohm and watt
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the total magnetic flux in a coil is divided by the cross sectional area of the coil, the unit produced will be measured in
Tesla
Henry
Pascal
Newton
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A conductor 100m long has across sectional area of 1mm2 and a resistance of 2Ω. If the conductor is cut into two 50m lengths and joined in parallel, the resistance of the combined conductor will be
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A simple machine consists of a coil of wire being rotated within a magnetic field by an exterior force. This will demonstrate the principle of a
motor
cage
generator
rectifier
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The sinusoidal waveform (sine wave) shown in figure 1 below will be produced by a
d.c. generator
a.c. motor
a.c. motor
a.c. generator
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A machine has an input of 10kW and an output of 7.5kW. The efficiency of the machine will be
17.5%
75%
2.5%
133.3%
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