Question 1

The cosine of the difference in phase angle between voltage and current is:

Options :

A : power factor.

B : real power.

C : apparent power.

D : mho.

Answer: A

Question 2

What does the second letter of the four-letter cooling code on liquid-immersed transformers identify?

Options :

A : Internal cooling medium in contact with the windings

B : Circulation mechanism for internal cooling medium

C : External cooling medium

D : Circulation mechanism for external cooling medium

Answer: B

Question 3

According to the referenced API standard in the guide, special purpose induction motors covered by API STD 541 are:

Options :

A : 100 hp and larger

B : 250 hp and larger

C : 375 kW (500 hp) and larger

D : 1000 kW and larger only

Answer: C

Question 4

Final inspection and shipping preparations of switchgear typically consists of verifying all of the following except:

Options :

A : all final manufacturing and drawing issues are closed.

B : correct engraving of unit and master nameplates.

C : visual inspection of packaging requirements.

D : all items on the manufacturer's QC checkout are signed off.

Answer: A

Question 5

Within the context of NEMA ICS 1, which of the following describes PD 3?

Options :

A : Moisture occurs continuously, dust quantity becomes conductive when moist, and pollution is sufficient to cause tracking and erosion at a high rate

B : Moisture occurs occasionally, dust quantity is sufficient to become conductive when moist and pollution is sufficient to cause tracking or erosion at a slow rate

C : Moisture does not occur, always dry, dust insignificant and no effect from pollution

D : Moisture occurs frequently, dust quantity is sufficient to become conductive when moist, and pollution is sufficient to cause tracking or erosion at a moderate rate

Answer: D