I need the answer as soon as possible Tutorial Problems 32.51. A 100-kVA distribution transformer has a maximum efficiency of 98 % at 50 % full-load and unitypower factor. Determine its iron losses and full-load copper losses.The transformer undergoes a daily load cycle as follows :LoadPower factorLoad duration100 kVA1.08 hrs50 kVA0.86 hrsNo load10 hrsDetermine its all-day efficiency.(Electrical Engineering, MS Univ. Baroda 1979)2. What is meant by energy efficiency of a transformer ?A 20-kVA transformer has a maximum efficiency of 98 percent when delivering three-fourth full-loadat u.p.f. If during the day, the transformer is loaded as follows :12 hoursNo load6 hours12 kWh, 0.8 p.f.6 hours20 kW, u.p.f.Calculate the energy efficiency of the transformer.(Electrical Technology-III, Gwalior Univ., 1980)

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Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Which of the following statements about equipment grounding conductors (EGCS) is true? A. The National Electrical Code permits the EGC to also perform as a grounding electrode conductor. B. More than one EGC must be used if multiple circuits are installed in a single raceway, cable, or cable tray. C. No current should be present in the EGC during normal operation. D. EGCs are required to be decreased in size to address voltage drop.
8) In Staircase ramp type digital voltmeter contains DC amplifier with a fixed gain of ___________. 1 1000 100 10
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4. Do some search about the functionality of Airport Metal Detectors. Explain your answer in a paragraph.
Refer to the National Electrical Code® or the working drawings when necessary. Where applicable, responses should be written in complete sentences. For problems 1 and 2, six luminaires, similar to Style E used in the Commercial Building, are to be installed in a room that is 12 ft x 18 ft (~3.7 m x ~5.5 m) with a 9 ft (2.8 m) floor-to-ceiling height. The spacing ratio for the luminaire is 1:0. 1. The maximum distance that the luminaires can be separated and achieve uniform illuminance is ft ( m). For problems 2-5, two luminaires, 8 ft (2.5 m) and 4 ft (1.2 m) in length with dimensions as shown in Figure 15-7, are to be installed in tandem (end to end). The end of the long luminaire is to be 2 ft (600 mm) from the wall. 2. The center of the outlet box should be roughed in at ft ( m) from the wall. 3. The first support should be installed at the wall. ft ( m) from 4. The second support should be installed at from the wall. ft ( m) 5. The final support should be installed at the wall. ft…
Assuming all terminals are rated 75°C and you have a #10 AWG THHN/THWN conductors in a conduit and the conduit is run on the roof off a office building where the ambient temperature never rises above 30°C the largest size circuit breaker or fuse permitted to protect these wires is:?
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The wording that I am running into with questions such as "The number of conductors required to be installed between three-way and four-way switches is " is confusing. The text is not expalining this in a way that I am understanding anything other than grounding conductor, which is optional unless I am using a metal box. So what type of "conductor" is beng discussed?
Can I use a distribution box on every floor to distribute telephone lines to their designated outlets?
QUESTION 3 We are running 3 wires and a ground in a RMC to a control panel with a 60 amp circuit breaker disconnect in the control panel. The conduit is run along the ceiling where the ambient air temperature is 100 degrees. The control panel feeds our secondary cooling pump. What size are the ungrounded conductors? All conductors have typeTHHN insulation.
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