101 Basic Series - Module 19 - CEU Education
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1
fter an overload, the bimetallic strip cools and reshapes itself resetting the contacts.
2
In-rush current doesn't cause much effect to circuit breakers or fuses on a motor circuit.
3
It is impossible to put too much load on a motor so that it will never reach its synchronous speed.
4
The control circuit directly operates the _____.
5
hich is NOT a part of a eutectic overload relay?
6
A heater coil converts excess current into ____ which is used to determine whether the motor is in danger.
7
A starter is a device that controls the use of electrical power, usually to a motor.
8
Contactors are used to make and break a circuit to a load.
9
In-rush current is the amount of current drawn when a motor is first starting up. This can be ______ times the normal running current draw.
10
Ambient-compensated bimetallic elements are used to reduce the effects of environmental heat sensed by the overload relay.
11
This starter type connects the incoming power to the motor, in one direction at one speed, and is the most commonly used type.
12
The heat surrounding a motor in its given environment is referred to as its _____ temperature.
13
A solid state overload relay measures the amount of current or change in ____ to protect a motor from an overload.
14
When the coil of a magnetic contactor is de-energized, the magnetic field is broken and the spring forces the contacts apart breaking the circuit.
15
An overload relay provides protection with a current sensing unit in line with the motor, and a mechanism to break the circuit.
16
As contacts open and close an electrical arc is created which produces electrical heat.
17
Double break contacts open and close the circuit in two places.
18
A magnetic contactor can be operated remotely without human intervention.
19
Which circuit makes remote operation possible in a starter?
20
The speed that a motor is designed to run at is called _____ speed.
 
   



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