QUESTIONS AND CORRECT Answers
Memory can be built into either a pneumatic or electric feedback
control circuit containing only monostable devices by
using
a time-delay relay
feedback
logic functions
static control
On architectural working drawings, an electrician is floor plan
concerned mainly with the electrical drawings
superimposed on the
floor plan
front elevation
side view
site plan
In a shunt motor, the field windings are separately excited
________ so they carry just a fraction of the load current
compared to the full load current of the series motor's
field windings.
balanced
excited
forged
wired
, Which of the following is not typically used to identify Colors
conductors in a motor-control circuit?
Colors
Letters
Numbers
Letter/number combinations
Which are most affected by overvoltage? Slow-speed motors
Capacitor-start motors
Slow-speed motors
Split-phase motors
Squirrel-cage motors
In the identification 8TR15XTO, the X indicates normally closed
de-energized
extended
normally closed
normally open
Which of the following provides both overload Combination motor starter
protection and short-circuit protection in one unit?
Circuit breaker
Combination motor starter
Fused safety switch
Thermal overload relay
The following symbol represents an ________ outlet in a exit light; wall
____________.
extension cord; ceiling
extension cord; wall
exit light; ceiling
exit light; wall
A sequence of operation consists of two elements: a log graph
and a
CD
graph
manual