I 1 And I 2

Question 0

Besides start and stop, a motor starter also provides

Answer 0

Overload protection

Question 1

3 types of manual motor starters

Answer 1

Toggle, push button and drum

Question 2

The hp of the starter must exceed what?

Answer 2

The hp of the motor

Question 3

What part of a simple manual motor starter senses overload?

Answer 3

Overload relay OLR (heater)

Question 4

Melting type of thermal overload is a

Answer 4

Solder pot relay

Question 5

Bi metallic strip overload relay uses what

Answer 5

A strip of two dissimilar metals

Question 6

What is low voltage protection

Answer 6

A control device that drops out on low voltage but won’t pick up once voltage is restored

Question 7

Toggle switch is good for how may hp?

Answer 7

One

Question 8

Drum switch is good for how many hp?

Answer 8

3hp @ 240

1hp @ 120

Question 9

Push button switch is good for how many hp?

Answer 9

5hp @ 230v

Question 10

List 3 methods when guarding the exposed live parts of a motor

Answer 10

Electric room
Elevate beyond 2.5m above the floor
Fence

Question 11

2 important safety steps you must take before starting work on a motor branch circuit

Answer 11

Disconnect power source

Lock out and tag out

Question 12

How can you protect your face and eyes from atc flash when closing a motor switch?

Answer 12

Turn your head when operating switch

Question 13

Before you energize motor, test with a

Answer 13

Megger

Question 14

Besides shock, a motor presents what kind of hazards that can be reduced by using?

Answer 14

Mechanical

Guards

Question 15

Three functions other than start and stop for a motor controller

Answer 15

Running protection
Reverses rotation
Varies the speed

Question 16

The difference between magnetic contactor and magnetic motor starter

Answer 16

The starter has overload protection

Question 17

Difference between power circuit and control circuit or a starter?

Answer 17

Power circuit= main line contacts

Control circuit=electro coil and aux contacts

Question 18

2 parts of a thermal overload relay

Answer 18

Heater element

N/c aux contacts

Question 19

3 phase motor requires a what in series with each line?

Answer 19

Overload heater

Question 20

Selection of the overload heater is based on

Answer 20

Full load current of motor

Question 21

Before you can reset an OLR you must

Answer 21

Give it time to cool

Question 22

Stops are always

Answer 22

Series

Question 23

Starts are always

Answer 23

Parallel

Question 24

Two wire circuits

Answer 24

Release

Question 25

3 wire circuits

Answer 25

Protection

Question 26

Release

Answer 26

The motor will restart after voltage returns

Question 27

Protection

Answer 27

The contacts open and will not start again until manually reset.

Question 28

Pilot light

Answer 28

Indicate operation from another location

Show status of motor

Question 29

4 components in the power circuit of an across the line mag starter

Answer 29

Disconnect switch
Over current protection
Hp rated contacts
OLR

Question 30

2 components in the control circuit of a mag starter

Answer 30

Magnetic starter coil
OLR aux contacts
Push buttons

Question 31

2 wire control

Answer 31

Maintained contact devices

Question 32

3 wire control

Answer 32

Momentary contact devices

Question 33

What is full voltage control

Answer 33

Control circuit has the same voltage as the power circuit.

Question 34

What hazard can occur using a simple job button with start stop

Answer 34

The motor may still continue to run.

Question 35

How do you fix the problem with a simple jog?

Answer 35

Create a definite break by including a 2 position jog run switch

Question 36

What’s the difference between a 3 phase reversing mag starter and a Non-reversing?

Answer 36

The reverse has (2) sets of 3 pole contactors

Question 37

Carter could be caused by

Answer 37

Broken shading coil
Poor connection in control circuit
Low voltage.