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This One's For Electricians Trivia Quiz

A brief quiz for students of electricity.

A multiple-choice quiz by Tristan.. Estimated time: 5 mins.

Author
Tristan.

Time
5 mins

Type
Multiple Choice

Quiz #
6,648

Updated
Dec 03 21

# Qns
10

Difficulty
Tough

Avg Score
6 / 10

Plays
4056

Last 3 plays: Guest 201 (8/10), Guest 76 (4/10), Guest 106 (5/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. Which is the most correct definition of voltage? Hint

A measure of the amount of electricity flowing

A measure of electrical pressure

A measurement of electrical frequency

The amount of electricity consumed in a day

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Question 2 of 10

2. Which is the most correct definition of current? Hint

The measure of electrical pressure

The electricity used in heating a kilo of water

The amount of electricity used in a heater

The presence of electron flow

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Question 3 of 10

3. Which of the following is not a part of a DC machine? Hint

Yoke

Rotor bars

Armature

Field poles

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Question 4 of 10

4. A series DC generator requires an external power supply for the field poles.

True

False

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Question 5 of 10

5. What is the most correct definition of a transducer? Hint

A device that transforms energy from one form to another

A device that converts heat into electricity

A device that stops energy flowing

A piece of equipment that creates a voltage

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Question 6 of 10

6. What does RMS stand for? Hint

Roo Meat Sizzles

Real Music Sound

Root Mean Square

Root Mean Sine

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Question 7 of 10

7. Which of the following, is an advantage of using a Star-Delta motor starter, compared to a Direct On Line starter? Hint

Lower starting current

Lower starting torque

More contactors are used

Access is needed to both ends of the motor windings

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Question 8 of 10

8. Which component of a fluorescent lamp provides a starting current, and once the lamp is illuminated, current limiting?

Answer: (Starts with ' B ')

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Question 9 of 10

9. What sort of fuse would you select for an installation that required high current interrupting ability, and an allowance for instantaneous over currents? Hint

A thermal circuit breaker

A nail

A magnetic circuit breaker

HRC fuse

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Question 10 of 10

10. Whose law states that all currents flowing into a junction shall be equal to all currents flowing out of that junction? Hint

Kirchhoff's law

LA law

Fermi's law

Faraday's law

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Most Recent Scores

Apr 12 2024 : Guest 201: 8/10
Apr 06 2024 : Guest 76: 4/10
Mar 25 2024 : Guest 106: 5/10

Score Distribution

Quiz Answer Key and Fun Facts

1. Which is the most correct definition of voltage?

Answer: A measure of electrical pressure

Think of voltage like water pressure behind a tap.

2. Which is the most correct definition of current?

Answer: The presence of electron flow

3. Which of the following is not a part of a DC machine?

Answer: Rotor bars

Rotor bars are only found on AC induction motors.

4. A series DC generator requires an external power supply for the field poles.

Answer: False

A series generator is self excited. The residual magnetism in the field is enough to induce voltage in the armature.

5. What is the most correct definition of a transducer?

Answer: A device that transforms energy from one form to another

Transducers can be switches, strain gauges, temperature sensors or inductive switches.

6. What does RMS stand for?

Answer: Root Mean Square

Root Mean Square, the peak value of voltage x 0.707, or sine 45.

7. Which of the following, is an advantage of using a Star-Delta motor starter, compared to a Direct On Line starter?

Answer: Lower starting current

Starting current is still relatively high, 1.5 to 2.6 times the rated current, but much lower than a DOL starter.

8. Which component of a fluorescent lamp provides a starting current, and once the lamp is illuminated, current limiting?

Answer: Ballast

The ballast is the heaviest part of a fluorescent lamp.

9. What sort of fuse would you select for an installation that required high current interrupting ability, and an allowance for instantaneous over currents?

Answer: HRC fuse

A High Rupturing Capacity fuse is most suited to the above application. They are capable of interrupting high fault currents.

10. Whose law states that all currents flowing into a junction shall be equal to all currents flowing out of that junction?

Answer: Kirchhoff's law

Interesting to note how much time he had on his hands to think of that one.

Source: Author Tristan.

This quiz was reviewed by FunTrivia editor crisw before going online.
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