EBK THE ANALYSIS AND DESIGN OF LINEAR C
8th Edition
ISBN: 9781119228226
Author: Toussaint
Publisher: YUZU
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a. Calculate the synchronous speed of a
3-phase, 12-pole induction motor that is
excited by a 60 Hz source.
b. What is the nominal speed if the slip at
full-load is 6 percent?
A 3-phase, 75 hp, 440 V induction motor
has a full-load efficiency of 91 percent and
a power factor of 83 percent. Calculate the
nominal current per phase.
Please answer all the questions
a) What is the minimum required transformer rating for each transformer in kVA? b) Find the voltage required at Bus 1. c) The loadcentre is to be powered by PV panels that have the same I-V curve (ISC = 120 A, VOC = 60 V). Identify the configuration that uses the minimum number of panels to provide enough power to Bus 1. You can assume that the inverter converts the power at 95% efficiency and requires V DC input to generate the same VRMS AC output.
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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
- What happens to the rotor speed and rotor current when the mechanical load on an in- duction motor increases? Would you recommend using a 50 hp in- duction motor to drive a 10 hp load? Explain. Give two advantages of a wound-rotor mo- tor over a squirrel-cage motor. Both the voltage and frequency induced in the rotor of an induction motor decrease as the rotor speeds up. Explain.arrow_forwardPlease provide explainations and detailed working. thank youarrow_forwardPlease provide explainations and detailed working. thank youarrow_forward
- The excitation of a three-phase synchronous motor connected in parallel with a load of 500 kW operating at 0-85 p.f. lagging is adjusted to improve the overall p.f. of the system to 0.95 lagging. If the mechanical load on the motor is 120 kW, calculate the kVA input to the synchronous motor and its p.f.?arrow_forwardA domestic load of 2300 kW at 0.88 p.f lagging and a motors load of 3400 kW at 0.85 p.f lagging are supplied by two alternators operating in parallel. If one alternator is delivering a load of 3300 kW at 0.9 p.f lagging, what will be the output power and p.f of the other alternator?arrow_forwardDesign a bank of capacitors to provide 60V and 2kWh energy to capture and store regen breaking energy. Use commercial supercapacitor cells at 3V and 3600F. Capacitor voltage drops almost linearly during discharge and below half voltage maximum it doesn’t provide significant power. If we discharge a fully charged capacitor to its half voltage maximum, how much energy can be discharged compared to a full-discharged capacitor (show your calculation)?arrow_forward
- 8-1) similar to Lathi & Ding, Prob. P.5.1-2 The figure below shows the Fourier spectra of signals of g,(t) and g₁(t). Determine the Nyquist rate and the corresponding sampling interval for signals of g,(t), g,(t), g₁(1) - g¸(1), g¸³(t), and g₁(1)g₁(1). Hint: Use the frequency convolution and the width property of convolution. G₁(f) G₂(f) -8000 0 8000 f -20000 10 20000 farrow_forwardCalculate the approximate values of the starting current, full-load current, and no- load current of a 150 horsepower, 575 V, 3- phase induction motor.arrow_forwardCapacitor voltage drops almost linearly during discharge and below half voltage maximum it doesn’t provide significant power. If we discharge a fully charged capacitor to its half voltage maximum, how much energy can be discharged compared to a full-discharged capacitor (show your calculation)?arrow_forward
- Design a bank of capacitors to provide 60V and 2kWh energy to capture and store regen breaking energy. Use commercial supercapacitor cells at 3V and 3600F.arrow_forwardPlease explain in step by step detail how to answer and solve this problemarrow_forwardTwo loads connected in parallel are respectively 2 kW at a pf of 0.75 leading and 4 kW at a pf of 0.95 lagging. Calculate the pf of the combined two loads. Find the complex power supplied by the source. Hints: • • Since the two loads are parallel, the complex power, S, supplied by the source is S = S₁+ S₂ Calculate the complex powers, S₁ and S2, of each load (use power triangles) and add them to find the total S. Calculate 0 and obtain pf.arrow_forward
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