EBK ELECTRIC MOTOR CONTROL
10th Edition
ISBN: 9780100784598
Author: Herman
Publisher: YUZU
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Chapter 14, Problem 2SQ
What are the hazards of phase failure and phase reversal?
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2. A three-phase transformer connection Yy, 2000 kVA, 20000/6000 V has the relative short-circuit voltages Ecc = 7% and ERcc = 1.7%.It is known that when empty this transformer consumes a power Po = 12.24 kW.
Calculate:a. Parameters Zcc, Rcc, Xcc, referring to the primary and EXcc.b. If the transformer is connected at rated voltage and feeds a load of 1800 kVA, fp = 0.8, calculate the line voltage at the secondary.c. The maximum apparent power, and the maximum efficiency fp = 0.8 inductive.
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1. A three-phase transformer with Yd connection, 300 kVA, 12000/220 V, has been short-circuit tested on the high voltage side giving the following results: 750 V, 14.434 A, 10838 W.When the transformer is connected to nominal voltage without load it consumes 5400W.
Calculate:to. Relative voltages of short circuit high voltage side: εcc, εRcc and εXcc.b. The voltage in the secondary when the transformer is connected to nominal voltage and feeds a load of 200 kW fp = 0.8 in delay.c. Apparent power of maximum efficiency and maximum efficiency with fp = 0.95 inductive.
Please solve for one of the collaborators and without using artificial intelligence
Find value of load resistance RL that can be connected to terminals a-b for maximum power transfer. Also calculate the maximum power that can be delivered to load RL.
Chapter 14 Solutions
EBK ELECTRIC MOTOR CONTROL
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- A modulating signal f(t) is bandlimited to 5 kHz is sampled at a rate of 15000 samples/sec. The samples are quantized into 128 levels. Calculate the transmission bandwidth if the following modulation types are used for signal transmission: 4- ASK 5- 8-PSK 6- FSK with Af = 25 kHzarrow_forwardDraw the Split-Phase Manchester code for the follow ng binary data: (1001010110)arrow_forward11.54 For the network in Fig. 11.73, find the complex power absorbed by each element. 120/-20° V Figure 11.73 For Prob. 11.54. | + -1302 j5Q 4 Ωarrow_forward
- Find a value of RL that can be connected to terminals a-b for maximum power transfer. Then, calculate maximum power that can be delivered to load RL.arrow_forwardA modulating signal f(t) is bandlimited to 5 kHz is sampled at a rate of 15000 samples/sec. The samples are quantized into 128 levels. Calculate the transmission bandwidth if the following modulation types are used for signal transmission: 4- ASK 5- 8-PSK 6- FSK with Af = 25 kHzarrow_forwardA modulating signal f(t) is bandlimited to 5 kHz is sampled at a rate of 15000 samples/sec. The samples are quantized into 128 levels. Calculate the transmission bandwidth if the following modulation types are used for signal transmission: 4- ASK 5- 8-PSK 6- FSK with Af = 25 kHzarrow_forward
- Don't use ai to answer I will report you answerarrow_forwardjan G(f) f Sketch the spectrum of g(t), which has a maximum frequency of 5 kHz, if it is sampled at the following sampling frequencies: 7 kHz, 10 kHz and 15 kHz. Indicate if and how the signal can be recovered at each sampling frequency.arrow_forwardDon't use ai to answer i will report your answerarrow_forward
- A single tone is modulated using FM transmitter. The SNR, at the input of the demodulator 20 dB. If the maximum frequency of the modulating signal is 4 kHz, and the maximum equency deviation is 12 kHz, find the SNR, and the bandwidth (using Carson rule) at the ollowing conditions: . For the given values of fm and Af. !. If the amplitude of the modulating signal is increased by 80%. 3. If the amplitude of the modulating signal is decreased by 50%, and frequency of modulating signal is increased by 50%.arrow_forwardThe circuit shown below on the left has the following parameters: V₁ = 5 V. R₁ = 40, R₂ = 40, α = 0.1. This circuit can be replaced by an equivalent circuit shown below on the right such that the voltage and current received by an arbitrary load resistor RL, are identical when connected to either circuits. Determine the value of the resistor R (in ) in the equivalent circuit. R₁ Rx R2 R₁ Vx R₁ Vi απ. barrow_forward1. Consider the following a unity feedback control system. R(s) + E(s) 500(s+2)(s+5)(s+6) s(s+8)(s+10)(s+12) -Y(s) Find the followings: a) Type of the system b) Static position error constant Kp, Static velocity error constant Ry and Static acceleration error constant Ka c) Find the steady-state error of the system for (i) step input 1(t), (ii) ramp input t 1(t), (iii) parabolic input t² 1(t). 2. Repeat the above problem for the following system. R(s) + E(s) 500(s + 2)(s + 5) (s+8)(s+ 10)(s+12) Y(s) 3. Repeat the above problem for the following system. R(s) + E(s) 500(s+2)(s+4)(s+5)(s+6)(s+7) s²(s+8)(s+10)(s+12) Y(s)arrow_forward
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