Electrical Theory And Generators
(197).webp "Electrical Theory And Generators - Quiz")
This quiz is an ultimate test to see how much you know about this volume. Good luck!
- 1.
What is the simplest form of matter?
- A.
Element
- B.
Mixture
- C.
Compound
- D.
Electrons
Correct Answer
A. ElementExplanation
(1-1) An Element Is the simplest form of matter.Rate this question:
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- 2.
A _____ is a combination of two or more substances without using a chemical reaction.
- A.
Element
- B.
Mixture
- C.
Compound
- D.
Electrons
Correct Answer
B. MixtureExplanation
(1-1) A Mixture is a combination of two or more substances without using a chemical reaction.Rate this question:
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- 3.
A _____ is two or more elements combined in definite portions by chemical means to form another substance.
- A.
Mixture
- B.
Compound
- C.
Electrons
- D.
Element
Correct Answer
B. CompoundExplanation
(1-1) A compound is two or more elements combined in definite portions by chemical means to form another substance.Rate this question:
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- 4.
In an atom, what electrons contain the most energy?
- A.
The energy is shared equally by all electrons
- B.
Orbiting electrons
- C.
Valence electrons
- D.
K shell electrons
Correct Answer
C. Valence electronsExplanation
(1-2) Valence electrons contain the most energy.Rate this question:
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- 5.
Atoms having more than four electrons, but less than eight are known as
- A.
Insulators.
- B.
Conductors.
- C.
Stable atoms.
- D.
Semiconductors.
Correct Answer
A. Insulators.Explanation
(1-3) Atoms having more than four electrons, but less than eight are known as insulators.Rate this question:
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- 6.
Atoms having only four electrons are known as
- A.
Insulators.
- B.
Conductors.
- C.
Stable atoms.
- D.
Semiconductors.
Correct Answer
D. Semiconductors.Explanation
(1-3) Atoms having only four electrons are known as semiconductors.Rate this question:
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- 7.
Atoms having only eight electrons are known as
- A.
Insulators.
- B.
Conductors.
- C.
Stable atoms.
- D.
Semiconductors.
Correct Answer
C. Stable atoms.Explanation
(1-2) If the atom has eight electrons in its outermost shell, it is stable.Rate this question:
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- 8.
The electrostatic field around a positive ion moves
- A.
Inward.
- B.
Outward.
- C.
Inward, then outward.
- D.
Outward, then inward.
Correct Answer
B. Outward.Explanation
(1-3) In a positive ion, the electrostatic field moves outwards.Rate this question:
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- 9.
The electrostatic field around a negative ion moves
- A.
Inward.
- B.
Outward.
- C.
Inward, then outward.
- D.
Outward, then inward.
Correct Answer
A. Inward.Explanation
(1-3) In a negative ion, there are electrostatic fields that move inwards.Rate this question:
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- 10.
What are the factors that affect the resistance of a material?
- A.
Area, weight, and state of material.
- B.
Area, temperature, and type of material.
- C.
Temperature, weight, and state of material.
- D.
Temperature, type of material, and state of material.
Correct Answer
B. Area, temperature, and type of material.Explanation
(1-6) Several factors, such as material type, area, and temperature are used to determine the amount of resistance placed on a material.Rate this question:
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- 11.
What is the resistance in a circuit if the power rating is 40 watts and total current is 2 amps?
- A.
40 ohms
- B.
20 ohms
- C.
10 ohms
- D.
0.5 ohms
Correct Answer
C. 10 ohmsExplanation
(1-9) To get Resistance in the circuit, you square the current to make a whole number, then you divide it by the power.Rate this question:
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- 12.
Convert 500 milliamps to standard amperage.
- A.
.005 amps
- B.
.05 amps
- C.
.5 amps
- D.
50 amps
Correct Answer
A. .005 ampsExplanation
(1-8) Milli is the decimal equivalent of .001Rate this question:
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- 13.
In a series-parallel circuit, find RT if series resistor R1=7 ohms, and parallel resistor R2 and R3=8 ohms.
- A.
23 ohms
- B.
15 ohms
- C.
11 ohms
- D.
8 ohms
Correct Answer
C. 11 ohmsExplanation
(1-12) In order to find RT start with the paralell branches to find the total resistance. Once reduced to to the equivalent of the series circuit, add it up with the other series branches to find the sum.Rate this question:
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- 14.
What is the difference between an open and a short?
- A.
An open causesresistance to decrease; a short causes resistance to increase.
- B.
Excessive current flow in an open circuit; no current flow in a shorted component.
- C.
No current flow in an open circuit; excessive current flow in a shorted component.
- D.
Minimum voltage development across the open component; maximum voltage development across the shorted component.
Correct Answer
C. No current flow in an open circuit; excessive current flow in a shorted component.Explanation
(1-19) A short causes an excessive amount of current flow, whereas an open stops current flow.Rate this question:
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- 15.
Voltage induced into a conductor by the expanding and collapsing of a magnetic field is...
- A.
Magnetism.
- B.
Reluctance.
- C.
Direct current.
- D.
Electromagnetic induction.
Correct Answer
D. Electromagnetic induction.Explanation
When a magnetic field expands or collapses around a conductor, it induces a voltage in the conductor. This phenomenon is known as electromagnetic induction. It is the process by which a changing magnetic field creates an electric current in a conductor. Therefore, the correct answer is electromagnetic induction.Rate this question:
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Feb 25, 2024Quiz Edited by
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Sep 27, 2011Quiz Created by
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