IP Prep

Question 1

What is the minimum ratio for ladders?

Answer 1

4:1

Question 2

What is the maximum ratio for ladders?

Answer 2

3:1

Question 3

Which is the highest rung that you are allowed to stand on on a ladder?

Answer 3

3rd from top

Question 4

When sizing a bond for service/transformers, what should you size it off of?

Answer 4

Ampacity of wire

Question 5

When sizing a bond or jumper in the field, what do you use to size the wire?

Answer 5

O/C size

Question 6

How do you find the system bonding jumper size when given primary overcurrent protection?

Answer 6

Primary O/C • TX ratio (600-120/208 is a t ratio of 2.88:1)

Ex) 125A • 2.88 = 360A. Use T. 16

Question 7

Do termination temperatures apply to bond and ground wires?

Answer 7

No, they are not current carrying conductors.

Question 8

What is the purpose of the evaporator?

Answer 8

Picks up heat from air

Question 9

What is the purpose of the condenser?

Answer 9

Removes heat from liquid

Question 10

Hacksaw teeth point in what direction?

Answer 10

Away from the handle

Question 11

What are the standard sizes of hacksaws?

Answer 11

12-16 and 12-32

Question 12

What is a 12-16 hacksaw used for?

Answer 12

Soft materials like wood, PVC, rigid pipe

Question 13

What is the 12-32 hacksaw used for?

Answer 13

Harder materials like emt, strut, redi rod, BX

Question 14

What is the crane signal for HOIST

Answer 14

Forearm vertical, forefinger up, moving hand in small circles

Question 15

What is the crane signal for LOWER?

Answer 15

Arm extended downward, forefinger pointed down, moving hand in small circles

Question 16

What is the crane signal for USE MAIN HOIST?

Answer 16

Tap fist on head, then use regular signals

Question 17

What is the crane signal for USE WHIPLINE/auxiliary hoist

Answer 17

Tap elbow with hand, then use regular signals

Question 18

What is the crane signal for RAISE BOOM

Answer 18

Arm completely extended, thumb pointed upwards

Question 19

What is the crane signal for lower boom?

Answer 19

Arm fully extended, thumb pointed downwards

Question 20

What is the crane signal for MOVE SLOWLY?

Answer 20

Use one hand to give any signal, with the other hand held overtop remaining motionless

Question 21

What is the crane signal for raise boom and lower load?

Answer 21

One arm fully extended with thumb upwards, other arm pointed downwards with forefinger pointed down and moving in small circles

Question 22

What is the crane signal for lower the boom and raise the load?

Answer 22

One arm fully extended with thumb pointed downwards, other arm pointing upwards with forefinger pointed up moving in small circles

Question 23

What does a solid thick line represent?

Answer 23

Object line

Question 24

What does a thin dashed line represent?

Answer 24

Hidden line

Question 25

What does this line represent ________ _ ________ _ ________

Answer 25

Centre line

Question 26

What are section lines?

Answer 26

Long diagonal lines, showing a cutting plane

Question 27

What is the difference between an elevation and a section symbol? (Not line)

Answer 27

Section has a long line attached to it

Question 28

Where do you find code information about overhead consumer conductor lengths?

Answer 28

Appendix B section 6

Question 29

When sizing a circuit breaker or fuse for a transformer, using table 13 do you round down or use the selection where the amperage falls in?

Answer 29

Use the range of whatever you calculated, don’t round down

Question 31

What needs to be the same when paralleling alternators?

Answer 31

Phase rotation, output voltage, frequency

Question 32

What are the two factors that determine synchronous speed

Answer 32

The number of stator poles, the frequency of the applied voltage

Question 33

What are the three factors of induced voltage in an induction motor?

Answer 33

Strength of magnetic field in the stator, number of turns cut, speed of cutting.

Question 34

What are the three factors for the amount of torque produced by an AC motor?

Answer 34

Strength of magnetic field of the stator, strength of magnetic field of the rotor, phase angle difference between rotor and stator fields

Question 35

What is the relationship of reduced voltage and torque of a SCIM?

Answer 35

A 50% decrease in voltage will be a 75% reduction in torque

Question 36

In a WRIM what happens as rotor speed increases?

Answer 36

Induced Voltage decreases, current decreases, torque decreases. If resistance is reduced more current will flow, rotor speed will slow, voltage will increase

Question 37

The start winding is at an angle of ______ from the run winding in a split phase motor?

Answer 37

90

Question 38

What are the armature subscripts in a DC motor circuit?

Answer 38

A1 is negative, A2 is positive

Question 39

When current flows in same direction as armature subscripts, what direction is dc motor rotating?

Answer 39

Clockwise.

Question 40

What material blocks frequency?

Answer 40

Any metal.

Question 41

What needs to be the same when paralleling generators?

Answer 41

Terminal voltage, phase sequence, frequency