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MSSC MAINTENANCE AWARENESS EXAM LATEST UPDATE
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MSSC MAINTENANCE AWARENESS EXAMLATEST UPDATE
When connecting a three-phase motor, the three lines (T1, T2, and T3) are typically
connected to _________. - ANSWER: L1, L2, and L3.
Electricians use __________ to protect the electrical wiring leading to the machine.
- ANSWER: rigid and flexible conduit.
When the wire or foil strip inside a fuse melts, it is referred to be __________. -
ANSWER, blown
The distinction between a fuse and a circuit breaker is ________. - ANSWER:
Circuit breakers can be reset and used again.
The amount by which two electrical waveforms are out of phase is measured in
_________. - Answer: degrees
Overload protection that physically disconnects the motor rather than electrically is
known as a(n) __________. - ANSWER: overload clutch.
What is the advantage of a circuit breaker over a fuse? - ANSWER: Can be reset.
*T or F
A motor starter's minimum number of contact sets is determined by the number of
power leads required by the motor. - ANSWER: True
, When a circuit's current is excessively high, it is usually due to an overload or a
__________. - ANSWER: Short circuit
The amount of energy spent by a circuit is known as _________. - ANSWER:
Power
A single-phase AC motor has only __________ motor wires that connect to the
power lines. - ANSWER: 2
A technician removed a piece of equipment from a disconnect, but the breaker
remains tripped. The next step is to inspect the wiring to the disconnect and
_________. - ANSWER: Test the breaker again.
Voltage is calculated using Ohm's Law formula, which is _________. - ANSWER:
E=IxR
When something gets stuck or jams in rotating equipment, it is protected by a(n)
__________. - ANSWER: overload clutch.
What is the most likely outcome if a motor is under excessive load? - ANSWER:
Blow a fuse or trip a thermal overload.
The overall power of an electrical circuit is calculated by adding the power
consumption of each component. - ANSWER: Any
Electrical wire that is exposed must be shielded by a pipe or tubing known as
__________. - ANSWER: conduit.
Kirchoff's Voltage Law for a series circuit states that the total voltage drop in a
series circuit equals the sum of the individual voltage drops. - ANSWER: sum.
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