Question

These questions are related to engineering codes and practices. Need help with these questions please. Have to chose from the multiple choice options for each question below.

Question 12

When testing the insulation resistance between the ground and the chassis, what result should you expect?

A.

The testing equipment will display a very low resistance at the end.

B.

The testing equipment will display a low voltage at the end.

C.

The testing equipment will display a high voltage at the end.

D.

The testing equipment will display a very high resistance at the end.

E.

The test will complete without breakdown of the material, and the testing equipment will display "PASS" at the end.

Question 13

What is the main purpose of an insulation resistance test?

A.

To measure the resistance of the insulation between the conductor and the exposed metal parts.

B.

To test the electrical insulation of the device for defects.

C.

To test the unit for leakage current between the ground and chassis of the device.

D.

To measure the resistance of the insulation between the ground and chassis of the device.

E.

To test the unit for leakage current between the ground and live pins of its power cable.

Question 14

A motor has a 3000 VAC nameplate rating. What should be the value of its DC voltage proof test after service?

A.

8960 VDC

B.

3000 VDC

C.

3000 VAC

D.

7000 VDC

E.

2880 VDC

F.

4200 VDC

G.

3840 VDC

H.

5600 VDC

I.

6000 VDC

J.

6720 VDC

Question 15

When preparing a 90-V AC equipment for a routine maintenance IR test, at what voltage should it be tested?

A.

Between 1 kV and 2.5 kV (DC)

B.

Between 500 V and 1000 V (DC)

C.

Between 100 V and 250 V (AC)

D.

Between 100 V and 250 V (DC)

E.

Between 1 kV and 2.5 kV (AC)

F.

Between 500 V and 1000 V (AC)

Question 16

When designing a circuit to include a fuse, care must be taken because:

A.

AC and DC fuses are made to break differently.

B.

IEC and UL fuses are meant to continuously operate at different percentages of their rated current.

C.

The rated current of a fuse is based on the current of the application.

D.

The Canadian Electrical Code requires overcurrent protection of transformers.

E.

All of the above answers.

Question 17

According to the CEC, which factors will likely affect the selection of a conductor?

A.

Number of wires.

B.

Flexibility.

C.

Resilience to environmental factors.

D.

Answers A and C only.

E.

Answers A, B, and C.

Question 18

In which section of the CEC should you refer to for general operation fees and permits?

A.

Section 0

B.

Section 2

C.

Section 4

D.

Section 8

E.

Section 12

Question 19

In which section of the CEC should you refer to help determine the AWG size of the wires?

A.

Section 0

B.

Section 2

C.

Section 4

D.

Section 8

E.

Section 12

Answer 1

Quo 12 When testing the insulation resistance between the ground and the chessis What result should you expect ? Ary The testing equipment will display a resy high resistence at the end. (optim D) because the insulation Resis tonee ganally stays in the range of mega ohm so it will show very high reding.