EWRB ELECTRICAL
THEORY EXAM
(LATEST) QUESTIONS
WITH 100% CORRECT
ANSWERS!!
EWRB
Evatee 10/5/24 EWRB
,EWRB ELECTRICAL THEORY EXAM (LATEST)
QUESTIONS WITH 100% CORRECT
ANSWERS!!
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.
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
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