Einstein, Harry Houdini or David Copperfield with all their knowledge
and magic couldn't find the answers to these exam questions in 2 DAYS
without the Key Word Index!!! You
can try it and see if 6 questions x 2.4 minutes = 14.4 minutes is
enough time for you!
Switching devices consisting of combined temperature-actuated devices
and manually controlled switches that serve both as the controllers and
the disconnecting means shall comply with all the following conditions:
(a) Open all grounded conductors when
manually placed in the "off" position.
(b) Be designed so that the
circuit cannot be energized automatically if the device is manually
placed in the "on" position.
(c) Be provided with a positive
lockout in the "off" position.
(d) Be provided with a positive
lockout in the "on" position.
The use of the term ____ is intended to convey that a
can be operated via another means or location through communications
without a direct operator interface with the controlled device.
remote (d) signal
Potential transformers, and other switchboard devices with potential
coils shall be supplied by a circuit that is protected by standard
overcurrent devices rated ____ amperes or less.
15 (b) 20
(c) 25 (d) 30
Transformers shall have a secondary short circuit current of not more
than ____ mA
if the open circuit voltage is over 7500 volts.
150 (b) 200
(c) 300 (d) 500
Joints in festoon wiring shall be ____.
double-insulated (d) soldered
The neutral of feeders supplying solid-state, 3-phase, 4 wire dimming
systems shall be considered a/an ____ conductor.
balanced (d) isolated