Question 1 of 15

IEEE 1584-2018 standard is defined for?

A

Short circuit study

B

Load flow study

C

Arc flash study

D

Snubber circuit analysis

Question 2 of 15

How many drafts of IEEE-1584 2018 were made before final approval:

A

2

B

4

C

6

D

8

Question 3 of 15

In previous IEEE 1584-2002, the number of electrode combinations are:

A

One

B

Two

C

Three

D

Four

Question 4 of 15

In latest IEEE 1584, how many new electrode combinations are added?

A

One

B

Two

C

Three

D

Four

Question 5 of 15

According to IEEE 1584-2018, the conductor gap for 601 V to 15kV range from:

A

¼ inches to 3 inches

B

¾ inches to 10 inches

C

¾ inches to 7 inches

D

None of the above

Question 6 of 15

According to IEEE 1584-2018, the range of bolted short-circuit current for 208 V to 600 V range from:

A

500 A to 106,000 A

B

500 A to 150,000 A

C

200 A to 65,000 A

D

200 A to 70,000 A

Question 7 of 15

If the range of model cannot be obtained according to the defined parameters and enclosure type of IEEE-1584 2018, then which method is used to calculate it?

A

Gauss Seidel method

B

Gauss Jordan method

C

Kron reduction method

D

Ralph lee method

Question 8 of 15

In previous IEEE-1584 standard, how many voltage range was used for arcing current calculation?

A

One

B

Two

C

Three

D

Four

Question 9 of 15

In updated IEEE 1584-2018 standard, how many new equations were introduce for arcing current calculation?

A

One

B

Two

C

Three

D

Four

Question 10 of 15

In updated IEEE 1584-2018 standard, how many arc flash tests were done to achieve accuracy?

A

1000

B

2000

C

3000

D

4000

Question 11 of 15

According to IEEE-1584 standard, for a 15 kV switchgear, the typical bus gap (in mm) should be?

A

152

B

104

C

32

D

25

Question 12 of 15

According to IEEE-1584 standard, for a 5 kV MCC, the enclosure size ranges from:

A

660.4 mm × 660.4 mm × 660.4 mm

B

26 in × 26 in × 26 in

C

Both (a) and (b)

D

None of the above

Question 13 of 15

For system operating at 240 V and below, and current less than 2000 A, the chances of arc flash are:

A

Maximum

B

Minimum

C

Average

D

None of the above

Question 14 of 15

The incident energy change for grounded and ungrounded system varies?

A

Highly

B

Slightly

C

1.5 times

D

No change

Question 15 of 15

According to IEEE 1584 2018 standard, every protective device should be able to isolate arc flash with in?

A

1 second

B

2 second

C

3 second

D

4 second