Electrical Theory Practice Test Questions And 100% Correct Answers.
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Module
Electrical Theory
Institution
Electrical Theory
Voltmeter - Answer A high resistance is connected in series with the internal coil of a galvanometer to make?
If a transformer ratio is 20/1, what does it mean for the secondary? - Answer The primary voltage is 20 times greater than that of the secondary.
If a motor enclosure is designe...
Electrical Theory Practice Test
Questions And 100% Correct Answers.
Voltmeter - Answer A high resistance is connected in series with the internal coil of a galvanometer to
make?
If a transformer ratio is 20/1, what does it mean for the secondary? - Answer The primary voltage is 20
times greater than that of the secondary.
If a motor enclosure is designed to contain sparks or flashes that could ignite surrounding vapors or
gases, then the enclosure is considered to be which of the following: - Answer Ventilated
The output of a 3-phase transformer is measured in what units? - Answer Amperes
In order to change the rotation of a DC series motor, what must be done? - Answer F1 and F2 must be
reversed.
What does Bonding do? - Answer Controls the load on the system installation
A meter used to measure both AC and DC voltage and current is known as? - Answer Multimeter
What material is used on conduits inside and outside of a box? - Answer Couplings
If a transformer has a voltage step-down from 117 volts to 6 volts then the ratio of the transformer is
equal to what? - Answer 1: 19, 5
If the power factor of a circuit is increased, then what occurs? - Answer The reactive power is
decreased
In a 3Ø circuit, how many electrical degrees separate each phase: - Answer 120
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