H.W.8: Assume that the two balanced loads in Fig.(a) for Example 8 are supplied by an 840-V rms 60-Hz line. Load 1 is Y-connected with (30 + j40) Q per phase, while load 2 is a balanced three-phase motor drawing 48 kW at a power factor of 0.8 lagging. Assuming the abc sequence, calculate: (a) the complex power absorbed by the combined load, (b) the Kvar rating of each of the three capacitors A-connected in parallel with the load to raise the power factor to unity, and (c) the current drawn from the supply at unity power factor condition. Answer: (a) 56.47 + j47.29 kVA, (b) 15.7 KVAR, (c) 38.813 A.

H.W.8: Assume that the two balanced loads in Fig.(a) for Example 8 are supplied by an 840-V rms 60-Hz line. Load 1 is Y-connected with (30 + j40) Q per phase, while load 2 is a balanced three-phase motor drawing 48 kW at a power factor of 0.8 lagging. Assuming the abc sequence, calculate: (a) the complex power absorbed by the combined load, (b) the Kvar rating of each of the three capacitors A-connected in parallel with the load to raise the power factor to unity, and (c) the current drawn from the supply at unity power factor condition. Answer: (a) 56.47 + j47.29 kVA, (b) 15.7 KVAR, (c) 38.813 A.

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...

See similar textbooks

Similar questions

NOTES: -Pls Do It By Using Computer Line, -(Minimum 350 words.) Reference must be mentioned at the end of the report.
What 10 Wireless Equipment items need to purchase for a daycare business building?
can you solve this? Please write well
1)The NEC Style Manual indicates that if a term in the NEC appears in more than two articles, it qualifies for a definition in which of the following. a) The articles where the term appears b) Article 90 c) Article 100 d) Table of Contents 2)Definitions of terms related to grounding and bonding and used only in Article 250 are located in ________.a) Article 100 b) Article 200 c) Chapter 9 d) Section 250.2 3)As a general rule, when installing ground rod electrodes, two must be installed always unless a single ground rod provides not more than 25 ohms’ resistance to ground. a) True b) False
8) In Staircase ramp type digital voltmeter contains DC amplifier with a fixed gain of ___________. 1 1000 100 10
i need the answer quickly
The contractor is controlled by?
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:?
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.
Hey see
The only way to reach any of the levels where ABC Company is located in a building with ten stories is to use the elevator. In addition, those on the ninth and tenth levels need to connect to a group of servers located on the eighth. Describe the best wiring for the lift shaft. Pick the best option if there is more than one and justify your decision. If you think that interfloor connections may need to operate at substantially greater rates in the future, you may want to reconsider your current option. What is the optimum media for unbounded data transfer requirements? Justify your response.