Given: 1 - EMT, with 3-250 kcm il copper THW feeder conductors and 1-4 AWGTHWN copper ground. What is the total cross -section area of all the conductors?Oa.0.0824 inches squaredb.0.4596 inches squaredOc.1.3788 inches squaredd. 1.4612 inches squared

The given Electric Metallic Tube (EMT) consists of three 250 kcmil copper THW feeder conductors and…

Answered: Given: 1 - EMT, with 3-250 kcm il…

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.21MCQ

See similar textbooks

Similar questions

What size ungrounded conductors do we need for the 60 amp load? All conductors have typeTHHN insulation.
20. What is the maximum operating temperature of type THWN conductor? a. 750C b. 900C c. 700C d. 1100C
Figure Q1(a) shows a piece of ferromagnetic core with magnetic flux (B) with circular current (I) around the core. Figure Q1(b) show laminated ferromagnetic core with the same magnetic flux (B) and circular currents. With the aid of diagrams, explain how the current as highlighted in red (I) is developed in the ferromagnetic core in Figure Q1(a). B (a) (b) Figure 1(a) A ferromagnetic core and (b) laminated ferromagnetic core
State the main constituent elements of electrical cables, as well as the materials from which they may be made. Describe the following designations: H05VV-U 1G4 mm? and LSXAV 3x16 mm?.
If the cross sectional area of a conductor is doubled, then the resistance of the conductor remains the same. becomes half of the initial value. becomes double the initial value. becomes four times the initial value.
An over head string has 4 insulators. The voltage between the steel pin of the second insulator and metal cap of the fourth insulator is represent by *
If we increase the load than core loss and copper loss will... Decrease Increase Remain same
A hard-drawn copper conductor has a diameter of 0.41 in. What is the cross sectional area of this conductor in cmil?
What are the majority carriers in a P type material?
temperature rating that a conductor must have and still have 69 Ambient Tempere 4. The ampacity of 15 current-carrying 10 RHW aluminum conduc- tors in a raceway in an ambient temperature of 75'F is 1. gon factor for conductor ampacity in this location is (a) 12A (b) 15A (c) 22A (d) 30A 0.71 b0.82 0.88 0.96 5. Ain) uous load if the ambient temperature is 75°F and there are nine THHN conductor is required for a 19.70A noncontin- ne ambient temperature is 71"C, the minimum insulation current-carrying conductors in the raceway in a dry location. he capacity to carry current is (a) 14 (b) 12 (c) 10 A 60°C AI 90°C 105°C (d) 8 0 120°C 6. 6.11 Ampacity Adjustment [310.15(B)(3)(a)] The ampacity for each of nine current-carrying 10 THW conduc- tors installed in a 20 in. long raceway is 1 The ampacity of six current-carrying 4/0 XHHW aluminum con- ductors installed in a ground floor slab (wet location) is (a) 25A (b) 30A (c) 35A (d) 40A a) 135A 0) 144A (e) 185A 4 210A
How many holes are there in a conductor?Please select one:a.Same number as free electronicsb.Only those produced with thermal energyc.Manyd.None
Nichrome ribbon resistor elements each has a resistance of 1 ohm. The element is made from sheet of nichrome alloy, 0.025cm thick. If the width of the ribbon is 0.3cm, what length is required per element? Assume specific resistance of nichrome allow to be 109micro ohm-cm.

SEE MORE QUESTIONS

Recommended textbooks for you

Power System Analysis and Design (MindTap Course …

Electrical Engineering

ISBN:

9781305632134

Author:

J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:

Cengage Learning