Delmar's Standard Textbook of Electricity (MindTap Course List)
6th Edition
ISBN: 9781285852706
Author: Stephen L. Herman
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 29, Problem 1RQ
How many transformers are needed to make an open-delta connection?
Expert Solution & Answer
To determine
The number of transformers needed to make an open delta connection.
Answer to Problem 1RQ
Two transformers are needed to make an open delta connection.
Explanation of Solution
The open delta connection is used when the amount of three-phase power needed is not excessive. From the figure it can be seen that the open-delta transformer connection can be made with only two transformers. The total output power is 86.6% of the sum of the power rating of the two transformers when an open-delta connection is used.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
I need help in creating a matlab code to find the currents USING MARTIXS AND INVERSE to find the current
Problem 3
(a) Consider
x[n]
=
{
0,
1, 0 ≤ n ≤N-1
otherwise
_and_h[n] = {
1, 0 ≤ n ≤M-1
0, otherwise
with N > M. Plot the sequence y[n] = x[n] × h[n]. Make sure to specify the amplitude values
*
and time indices n of y[n] where y[n] is constant.
(b) Express the number L of samples of y[n] that are non-zero in terms of M and N.
(c) Consider
x'[n]
=
{
0,
1, N₁ ≤ n ≤ N₂
otherwise
1, M₁n M₂
and h'[n] =
=
0, otherwise
',
and assume that №2 - N₁ = N-1 and M2 - M₁
=
x'[n] h'[n] is equal to a shifted version of y[n]. What is the value of the shift?
-
= M 1. Show that the sequence y'[n]
=
Home Work
Calculate I, and I2 in the two-port of Fig. below
20
211=602
2/30° V
V₁
%12=-142
721=-j4 2
Z22=82
+
V₂
94
Chapter 29 Solutions
Delmar's Standard Textbook of Electricity (MindTap Course List)
Ch. 29 - How many transformers are needed to make an...Ch. 29 - Two transformers rated at 100 kVA each are...Ch. 29 - How does the NEC specify that the high leg of a...Ch. 29 - An open-delta three-phase transformer system has...Ch. 29 - If a single-phase load is connected across the two...Ch. 29 - A three-phase transformer connection has a...Ch. 29 - A three-phase transformer connection has a...Ch. 29 - A three-phase transformer bank has the secondary...Ch. 29 - A three-phase transformer bank has the primary and...Ch. 29 - Referring to the transformer connection in...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- HW-2: Consider the loop of Figure below. If B = 0.5az Wb/m2, R = 20 2, e = 10 cm, and the rod is moving with a constant velocity of 8ax m/s, find (a) The induced emf in the rod (b) The current through the resistor y I 00 121 & B (in) 60 Answer: (a) 0.4 V, (b) 20 mA &arrow_forwardWrite a Verilog program to design the 4-bit ripple carry counter using the instantiation process available in Verilog HDL and write the stimulus program to check the functionality of the design. Assume 4-bit ripple carry counter is designed from a T-flipflop and T-flipflop is designed from a D- flipflop.arrow_forwardHW3: A 9.375-GHz uniform plane wave is propagating in polyethylene (&-2.26). If the amplitude of the electric field intensity is 500 V/m and the material is assumed to be lossless, find: (a) the phase constant; (b) thearrow_forward
- HW1: The location of the sliding bar in Figure below is given by x = 5t + 2t³, and the separation of the two rails is 20 cm. Let B = 0.8x2a, T. Find the voltmeter reading at (a) t = 0.4 s; (b) x = 0.6 m.arrow_forwardFor the circuit shown in Fig. 2.18, he =1.1 K2, hfe =50. Find Avf, Rif and Rof. { Ans: -3.2; 1935; X2807. Ans:-3-2;193;728. Vcc Rs=10kQ RF = 40kQ Re=4KQ -ov Vsarrow_forwardFor the system shown in figure below, the per unit values of different quantities are E-1.2, V 1, X X2-0.4. Xa-0.2 Determine whether the system is stable for a sustained fault. The fault is cleared at 8-60°. Is the system stable? If so find the maximum rotor swing. Find the critical clearing angle. E25 G X'd 08 CB X2 F CB V28 Infinite busarrow_forward
- 17 For the circuit shown in Fig. 2.20, the transistors are identical and have the following parameters: hfe = 50, hie 1.1K, hre = 0, and hoe = 0. Calculate Auf, Rif and Rof. 25 V {Ans #45.4; 112 KM; 129 150k 47k www www +11 www 10k 6 4.7k 50μF Rif R₂1000 w 4.7k 47k Vo Q2 33k 4.7k ww 50µF 5μF 4.7k 1 R₁ Rofarrow_forwardFor the circuit shown in Fig. 2.18, he =1.1 K2, hfe =50. Find Avf, Rif and Rof. { Ans: -3.2; 1935; X2807. Ans:-3-2;193;728. Vcc Rs=10kQ RF = 40kQ Re=4KQ -ov Vs Fig. 2.18 Circuit for Q5.arrow_forwardThe circuit of Fig. 2.16 is to have Af=-1mA/V, D=1+ BA = 50, a voltage gain of -4, Rs =1KQ, and hfe = 150. Find RL, Re, Rif and Rof.. Vcc www RL OV Ans: 4 kor; 98053150 KS;∞. { An Re Fig. 2.16 Circuit for Q3.arrow_forward
- During the lab you will design and measure a differential amplifier, made with an opamp. inside generator R5 ww 500 V1 0.1Vpk 1kHz 0° R6 w 50Ω R1 ww 10ΚΩ VCC C1 balanced wire R3 w 15.0V signal+ 100nF U1A TL082CP ground 2 signal- R4 w C2 Question5: Calculate R3 and R4 for a 20dB. 100nF VEE -15.0V R2 ww 10ΚΩarrow_forwardnot use ai pleasearrow_forward3. Consider the system described by the transfer function Gp(s) polynomial controller to satisfy the below specifications: 1) The settling time is t = 1 second, 2) 0.1% peak overshoot, 3) and zero steady-state error for a ramp input. The sampling period is T = 0.01 second. 1 = Design a discrete-time s(s+5)*arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
Power System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning
EBK ELECTRICAL WIRING RESIDENTIALElectrical EngineeringISBN:9781337516549Author:SimmonsPublisher:CENGAGE LEARNING - CONSIGNMENT
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Power System Analysis and Design (MindTap Course ...
Electrical Engineering
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:Cengage Learning
EBK ELECTRICAL WIRING RESIDENTIAL
Electrical Engineering
ISBN:9781337516549
Author:Simmons
Publisher:CENGAGE LEARNING - CONSIGNMENT
TRANSFORMERS - What They Are, How They Work, How Electricians Size Them; Author: Electrician U;https://www.youtube.com/watch?v=tXPy4OE7ApE;License: Standard Youtube License