SACA Study Guide Motor Control Exam.
Parts of an electrical system that should be connected to earth include _______. - CORRECT ANSWER All
of the above
The _______ is the accepting standard in the United States for safely installing and maintaining electrical
systems and equipment. - CORRECT ANSWER NEC (National Electrical Code)
Which of the following is not a basic rule of electrical safety? - CORRECT ANSWER Always work by
yourself
Who should remove a lockout/tagout? - CORRECT ANSWER Only the person(s) who installed it
Three-phase power is transmitted in phases that are _______ degrees apart. - CORRECT ANSWER 120
Which of the following is not a common voltage supplied by a wye-configured system? - CORRECT
ANSWER 240 VAC
A grounded neutral wire can be used as an equipment ground. - CORRECT ANSWER False
A ground fault occurs when __________.
A. the ground conductor is opened
B. one of the phases is opened
C. one of the phases becomes grounded
D. the system becomes unbalanced - CORRECT ANSWER One of the phases becomes ungrounded
Which of the following is not a part of a fusible disconnect? - CORRECT ANSWER None of the above
A time-delay fuse only has one element. - CORRECT ANSWER False
, Which of the following is a factor that must be considered when selecting overcurrent protection
devices for a motor control circuit? - CORRECT ANSWER Rated full-load current of the motor
Which of the following is a typical three-phase squirrel-cage motor? - CORRECT ANSWER All of the
above
Which of the following items on a motor's nameplate is used to determine how much output power a
motor can safely produce above its rated output power? - CORRECT ANSWER Service Factory
If the service factor for a motor is not given on the nameplate, what should you assume the service
factor to be? - CORRECT ANSWER 1
Which of the following is not a result of connecting a dual-voltage motor to operate on the higher
voltage? - CORRECT ANSWER Increased current draw
Which of the following is not a function of motor control? - CORRECT ANSWER None of the above
Which of the following is not a basic requirement for a typical motor installation? - CORRECT ANSWER
All of the above
A motor starter is the same as a motor controller. - CORRECT ANSWER False
Magnetic contactors open and close their contacts through the use of a magnetic coil. - CORRECT
ANSWER True
The type of manual starter used for three-phase motors is a ________. - CORRECT ANSWER Integral
horsepower starter
The contacts of a manual starter will remain in the actuated position when power is lost. - CORRECT
ANSWER True
Parts of an electrical system that should be connected to earth include _______. - CORRECT ANSWER All
of the above
The _______ is the accepting standard in the United States for safely installing and maintaining electrical
systems and equipment. - CORRECT ANSWER NEC (National Electrical Code)
Which of the following is not a basic rule of electrical safety? - CORRECT ANSWER Always work by
yourself
Who should remove a lockout/tagout? - CORRECT ANSWER Only the person(s) who installed it
Three-phase power is transmitted in phases that are _______ degrees apart. - CORRECT ANSWER 120
Which of the following is not a common voltage supplied by a wye-configured system? - CORRECT
ANSWER 240 VAC
A grounded neutral wire can be used as an equipment ground. - CORRECT ANSWER False
A ground fault occurs when __________.
A. the ground conductor is opened
B. one of the phases is opened
C. one of the phases becomes grounded
D. the system becomes unbalanced - CORRECT ANSWER One of the phases becomes ungrounded
Which of the following is not a part of a fusible disconnect? - CORRECT ANSWER None of the above
A time-delay fuse only has one element. - CORRECT ANSWER False
, Which of the following is a factor that must be considered when selecting overcurrent protection
devices for a motor control circuit? - CORRECT ANSWER Rated full-load current of the motor
Which of the following is a typical three-phase squirrel-cage motor? - CORRECT ANSWER All of the
above
Which of the following items on a motor's nameplate is used to determine how much output power a
motor can safely produce above its rated output power? - CORRECT ANSWER Service Factory
If the service factor for a motor is not given on the nameplate, what should you assume the service
factor to be? - CORRECT ANSWER 1
Which of the following is not a result of connecting a dual-voltage motor to operate on the higher
voltage? - CORRECT ANSWER Increased current draw
Which of the following is not a function of motor control? - CORRECT ANSWER None of the above
Which of the following is not a basic requirement for a typical motor installation? - CORRECT ANSWER
All of the above
A motor starter is the same as a motor controller. - CORRECT ANSWER False
Magnetic contactors open and close their contacts through the use of a magnetic coil. - CORRECT
ANSWER True
The type of manual starter used for three-phase motors is a ________. - CORRECT ANSWER Integral
horsepower starter
The contacts of a manual starter will remain in the actuated position when power is lost. - CORRECT
ANSWER True
