C-202 Electrical Motor Controls Verified Questions
With 100% Pass
/. Equipment grounding involves connecting to earth ground all _____ parts of an
electrical system that do not carry current under normal conditions. - Answer-Metallic
/.A current as small as _____ can be fatal. - Answer-100 mA
/._____ stands for National Electrical Code. - Answer-NEC
/.Standing on a wet floor _____ the resistance between you and ground, increasing the
possibility of severe shock. - Answer-Decreases
/._____ is the process of blocking the energy flow from a power source to a piece of
equipment and assuring it remains blocked. - Answer-Lockout
/.An alternator has three main windings that are placed _______ degrees apart. -
Answer-120
/.A ___ configured distribution system has one end of each phase winding connected
together. - Answer-WYE
/.A(n) _____ configured distribution system has each phase winding connected end-to-
end to form a loop. - Answer-DELTA
/.A(n) _____ is a conductor that provides a return path to the source for the current
carrying conductors in the system. - Answer-Neutral
/.When one of the phases of a system becomes grounded, it is called a _____. -
Answer-Ground Fault
/.The two most common devices to disconnect power to a circuit are a _____ and a
circuit breaker. - Answer-Fusible Disconnect
/.A _____ fuse has two elements, an instantaneous element and an overload element. -
Answer-Time-Delay
/._____ current is the current that is drawn by a motor when it is operating at its rated
operating speed. - Answer-Full-Load
/._____ is the maximum current carrying capacity of a conductor. - Answer-Ampacity
, /.Typically, the overcurrent protection for a motor should be selected for _________ %
of the full-load current of the motor. - Answer-125
/.The _____ of a three-phase motor is made up of three separate sets of windings. -
Answer-Stator
/.One of the most common NEMA frame sizes for small motors is _____. - Answer-56
/._____ is the temperature of the air surrounding an operating motor. - Answer-Ambient
Temperature
/.The _____ represents the margin of safety for operating a motor above its rated output
power. - Answer-Service Factor
/.A disconnect must open all ungrounded conductors ____________ - Answer-
Simultaneously
/.Overload protection is designed to protect the _____ by disconnecting it from the
power source when an overload is sensed. - Answer-Motor
/.A _____ is a motor controller that includes overload protection. - Answer-Motor Starter
/.The contacts of a(n) _________________ motor starter are opened and closed when
acted upon by a coil. - Answer-Magnetic
/.Fractional horsepower starters are used only for _____ motors rated for less than 1hp.
- Answer-Single-Phase
/.Three-pole integral horsepower starters are sued to control _____ motors rated up to
10hp. - Answer-Three-phase
/.The contacts of a manual motor starter will remain actuated if power is lost unless the
starter has _____ protection - Answer-Low-Voltage
/.An _____ is used to sense when a motor is being operated beyond its safe operating
limits. - Answer-Overload device
/.The two types of thermal overloads are melting alloy and _____. - Answer-Bimetallic
/.When an overload is detected by a bimetallic overload, the two metals _____ and
cause the starter contacts to open. - Answer-Deflect
/.In a 480VAC 3 phase WYE system with a neutral ground, what are the phase to phase
voltages and the phase to neutral voltage? - Answer-Phase-Phase = 480VAC / Phase-
Neutral = 277VAC
With 100% Pass
/. Equipment grounding involves connecting to earth ground all _____ parts of an
electrical system that do not carry current under normal conditions. - Answer-Metallic
/.A current as small as _____ can be fatal. - Answer-100 mA
/._____ stands for National Electrical Code. - Answer-NEC
/.Standing on a wet floor _____ the resistance between you and ground, increasing the
possibility of severe shock. - Answer-Decreases
/._____ is the process of blocking the energy flow from a power source to a piece of
equipment and assuring it remains blocked. - Answer-Lockout
/.An alternator has three main windings that are placed _______ degrees apart. -
Answer-120
/.A ___ configured distribution system has one end of each phase winding connected
together. - Answer-WYE
/.A(n) _____ configured distribution system has each phase winding connected end-to-
end to form a loop. - Answer-DELTA
/.A(n) _____ is a conductor that provides a return path to the source for the current
carrying conductors in the system. - Answer-Neutral
/.When one of the phases of a system becomes grounded, it is called a _____. -
Answer-Ground Fault
/.The two most common devices to disconnect power to a circuit are a _____ and a
circuit breaker. - Answer-Fusible Disconnect
/.A _____ fuse has two elements, an instantaneous element and an overload element. -
Answer-Time-Delay
/._____ current is the current that is drawn by a motor when it is operating at its rated
operating speed. - Answer-Full-Load
/._____ is the maximum current carrying capacity of a conductor. - Answer-Ampacity
, /.Typically, the overcurrent protection for a motor should be selected for _________ %
of the full-load current of the motor. - Answer-125
/.The _____ of a three-phase motor is made up of three separate sets of windings. -
Answer-Stator
/.One of the most common NEMA frame sizes for small motors is _____. - Answer-56
/._____ is the temperature of the air surrounding an operating motor. - Answer-Ambient
Temperature
/.The _____ represents the margin of safety for operating a motor above its rated output
power. - Answer-Service Factor
/.A disconnect must open all ungrounded conductors ____________ - Answer-
Simultaneously
/.Overload protection is designed to protect the _____ by disconnecting it from the
power source when an overload is sensed. - Answer-Motor
/.A _____ is a motor controller that includes overload protection. - Answer-Motor Starter
/.The contacts of a(n) _________________ motor starter are opened and closed when
acted upon by a coil. - Answer-Magnetic
/.Fractional horsepower starters are used only for _____ motors rated for less than 1hp.
- Answer-Single-Phase
/.Three-pole integral horsepower starters are sued to control _____ motors rated up to
10hp. - Answer-Three-phase
/.The contacts of a manual motor starter will remain actuated if power is lost unless the
starter has _____ protection - Answer-Low-Voltage
/.An _____ is used to sense when a motor is being operated beyond its safe operating
limits. - Answer-Overload device
/.The two types of thermal overloads are melting alloy and _____. - Answer-Bimetallic
/.When an overload is detected by a bimetallic overload, the two metals _____ and
cause the starter contacts to open. - Answer-Deflect
/.In a 480VAC 3 phase WYE system with a neutral ground, what are the phase to phase
voltages and the phase to neutral voltage? - Answer-Phase-Phase = 480VAC / Phase-
Neutral = 277VAC
