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The failures common in magnetic coils are due to _______.
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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


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