CORRECT ANSWERS.
When connecting a 3-phase motor the three lines (T1,T2 and T3) are usually connected to
__________. - -- L1, L2, and L3
Electricians use __________ to prevent damage to electrical wiring running to the machine. -
-- rigid and flexible conduit
When the wire or foil strip inside a fuse melts, the fuse is said to be __________. - --
blown
The difference between a fuse and a circuit breaker is __________. - -- circuit breakers
can be reset and used again
The amount two electrical waveforms are out of phase is measured in __________. - --
degrees
The type of overload protection that protects the motor by disconnecting it physically
instead of electrically is a(n) __________. - -- overload clutch
Which of the following is an advantage of a circuit breaker over a fuse? - -- Can be
reset
*T or F
The minimum number of sets of contacts a motor starter has depends on the number of
power leads the motor requires. - -- True
When current in a circuit is too high, it is usually the result of too many loads or a
__________. - -- short circuit
The measure of energy consumed by a circuit is called __________. - -- power
, MSSC MAINTENANCE AWARENESS WITH 100%
CORRECT ANSWERS.
For a single-phase AC motor, only __________ motor wires connect to the power lines. -
-- 2
A technician has removed a piece of equipment from a disconnect, but the breaker still
trips. The next step is to check the wiring to the disconnect and __________. - -- test
the breaker again
The Ohm's Law formula for calculating voltage is __________. - -- E = I × R
When something binds or jams in rotating machinery, the machinery is protected by a(n)
__________. - -- overload clutch
If a motor has an excessive load, what event is most likely to occur? - -- Blow a fuse
or trip a thermal overload
The total power in __________ electrical circuit is calculated by finding the sum of the
individual component power consumption. - -- any
Electrical wiring that runs in exposed locations must be protected by pipe or tubing called
__________. - -- conduit
Kirchoff's Voltage Law for a series circuit shows that the total voltage dropped in a series
circuit is equal to the __________ of the individual voltage drops. - -- sum
Hydraulics deals with the transmission and control of energy by a pressurized? - -
Liquid