Magnetic Coils – Physics Mid Exam
The key terms of Physics Mid Exam include, magnetic Coils, Input Voltages, opens and shorts, electromagnetically operated switch, single pole, single throw switch, double pole, control relay, double throw switch, thermal time delay, thermal bi-metallic strip.
The failures common in magnetic coils are due to _______.
opens and shorts
When the input voltages or signals are NOT correct, check the _______.
preceding circuit
The two most common faults in a relay are _______.
faults in the coil and contacts
Which part of the relay is shaded GREEN?
Contacts
What is a relay?
An electromagnetically operated switch.
What is the reference designator for relays?
K
What type of relay remains energized after the input power is taken away?
Latched
What type of relay uses a thermal bi-metallic strip as the common terminal?
Thermal time delay
Relays can have _______.
one or more poles
Which part of the relay is shaded BLUE?
Armature
A POWER relay is similar to a ___
single pole single throw switch
What type of relay does not operate as soon as the input voltage is applied?
Time delay
Relays are used for _______
single pole single throw operations
single pole double throw operations
latching and time delay operations
all of the above
.All control relays use at least a _______.
single pole double throw switch
A CONTROL relay is similar to a _______.
single pole double throw switch
The failures common in magnetic coils are due to _______.
opens and shorts
When the input voltages or signals are NOT correct, check the _______.
preceding circuit
The two most common faults in a relay are _______.
faults in the coil and contacts
Which part of the relay is shaded GREEN?
Contacts
What is a relay?
An electromagnetically operated switch.
What is the reference designator for relays?
K
What type of relay remains energized after the input power is taken away?
Latched
What type of relay uses a thermal bi-metallic strip as the common terminal?
Thermal time delay
Relays can have _______.
one or more poles
Which part of the relay is shaded BLUE?
Armature
A POWER relay is similar to a ___
single pole single throw switch
What type of relay does not operate as soon as the input voltage is applied?
Time delay
Relays are used for _______
single pole single throw operations
single pole double throw operations
latching and time delay operations
all of the above
.All control relays use at least a _______.
single pole double throw switch
A CONTROL relay is similar to a _______.
single pole double throw switch