ELECTRICAL THEORY EXAM QUESTIONS & ANSWERS 100% CORRECT!!
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Course
ELECTRICAL THEORY
Institution
ELECTRICAL THEORY
Providing a path to the earth often helps reduce electrostatic charge.
(a) True
(b) False - ANSWER(a) True
Lightning frequently terminates to a point of elevation and it strikes nonmetallic as well as metallic objects with the same frequency.
(a) True
(b) False - ANSWER(a) True
The te...
ELECTRICAL THEORY EXAM
QUESTIONS & ANSWERS 100%
CORRECT!!
Providing a path to the earth often helps reduce electrostatic charge.
(a) True
(b) False - ANSWER(a) True
Lightning frequently terminates to a point of elevation and it strikes nonmetallic as well as metallic
objects with the same frequency.
(a) True
(b) False - ANSWER(a) True
The termination of the lightning strike is unlikely to ignite combustible materials.
(a) True
(b) False - ANSWER(b) False
Lightning protection is intended to protect the building structure itself, as well as the electrical
equipment on or inside the building structure.
(a) True
(b) False - ANSWER(b) False
Nonmagnetic metals are ferrous, meaning they do not contain any iron, and cannot be magnetized.
(a) True
(b) False - ANSWER(b) False
,Magnetic lines of force can cross each other and they are called flux lines.
(a) True
(b) False - ANSWER(b) False
It is not the force of the magnetic field through a conductor that produces electricity; it is the relative
motion of the field to the electrons within the conductor that produces the movement of electrons.
(a) True
(b) False - ANSWER(a) True
People become injured and death might occur when voltage pushes electrons through the human
body causing the heart to go into ventricular fibrillation.
(a) True
(b) False - ANSWER(a) True
The severity of an electric shock is dependent on the current flowing through the body, which is
impacted by circuit voltage and contact resistance.
(a) True
(b) False - ANSWER(a) True
An electrical arc blast can approach _______________, which vaporizes metal parts and produces an
explosive and deadly pressure wave.
(a) 10,000*F
(b) 15,000*F
(c) 25,000*F
(d) 30,000*F - ANSWER(d) 30,000*F
, If a conductor carrying current is next to another conductor carrying current in the opposite
direction, the electromagnetic field attempts to push the conductors apart.
(a) True
(b) False - ANSWER(a) True
A clamp-on ac ammeter has a coil that is clamped around the conductor and detects the rising and
falling ____________ field being produced due to the as flow through the conductor.
(a) static
(b) current
(c) power
(d) magnetic - ANSWER(d) Magnetic
Ohmmeters measure the __________ or opposition to current flow of a circuit or component.
(a) Voltage
(b) current
(c) power
(d) resistance - ANSWER(d) resistance
The megger is used to measure very high- _____________ values, such as those found in cable
insulation, or motor and transformer windings.
(a) Voltage
(b) current
(c) power
(d) resistance - ANSWER(d) resistance
The electric motor on the principle of the attracting and repelling forces of ____________ fields.
(a) Voltage
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