A 5000 hp 3-phase, induction motor operates at 80% efficiency and 0.85 power factor lag. The apparent power drawn by induction motor is (Assume 1 hp = 746 W)
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Q: 4. An induction motor draws 4.5 A at a 0.75 lagging power factor from a 208V, 60 Hz source. a) What…
A: Only one question is to be answered according to bartleby policy.
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A: The given circuit diagram is shown below: The magnetic curve is shown below:
Q: A 3-phase induction motor will not start from standstill if one of its lines is open. True False
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Q: k: It is desired to increase the pf of a 1-ph motor from 0.75 lagging to 0.95 lagging by using a…
A: Given, V=0.5 kV I=25 A cosθ1=0.75 cosθ2=0.95 where, V is the voltage, I is the current, cosθ1 is the…
Q: 8. A 3-phase induction motor is running at 2% slip. If the input to rotor is 1000 W, then mechanical…
A: Given, A 3-phase induction motor has Slip, s=2%=0.02 Input power, Pin=1000 W
Q: A 15hp full load induction motor (1hp=745.7W) operates at 480V, 60Hz and a delayed 0.7 power factor.…
A: GivenRating of induction motor15hp ,480 v , 60Hz , 0.7 PfCapacitor value=75μF
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Q: A 120 V, 60 Hz, single-phase induction motors 1 and 2 are connected in parallel. Motor 1 takes a…
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Q: A three-phase induction motor has the following parameters: Uc 380V,
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Q: 1. A 3phase induction motor load draws a power of 13.33 KVA at 0.75pf from 460V source. If a…
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Q: 7. Calculate the coil inductance when a current of 4A in a coil of 800 turns produces a flux of…
A: (Q.7) Given, Current flows through a coil(I)= 4 A Number of turns (N)=800 Flux = 5 mWb
Q: 1. Calculate the coil inductance when a current of 4A in a coil of 800 turns produces a flux of…
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Q: The power input to the 3-phase induction motor is 60 kW. The stator losses total 1 kW. Find the…
A: Given, A 3-phase induction motor having Power input, Pi = 60 kW Stator losses = 1 kW Slip, s = 3 %
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Q: The equivalent circuit of an induction motor is shown below. Calculate the no load power factor. Ro1…
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Q: The generated or induced AC voltage is independent to the speed of the rotor. O True O False
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Q: The equation for 60 cycles current sine wave having RMS value 30 amperes, will be ____. Kindly…
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Q: A 3-phase induction motor runs at 3% slip and develops mechanical power equal to 10 kW. The air gap…
A: Given, A 3-phase induction motor runs at, Slip, s = 3 % = 0.03 Mechanical power, Pm=10 kW
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Q: A three-phase induction motor is running at 4% slip. If the input to the rotor is 1,000 W, then the…
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A: In this section let us try to answer the two different questions using the concepts from electrical…
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- The voltage regulation of alternator can be regulated by changing its rotational speed. O True O FalseDetermine the value of the capacitor to raise the power factor to unity when two induction motor must be connected to a capacitor . The first motor is twenty-four kilo watts and power factor 0.8, while the other is forty kilo watts and power factor 0.95.Determine the value of the capacitor to raise the power factor to unity when two induction motor must be connected to a capacitor . The first motor is twenty-four kilo watts and power factor 0.8, while the other is forty kilo watts and power factor 0.95. Answer: 1.562 mF
- An induction motor is rated 5 HP, 75% power factor and 220 V. What approximate size of capacitor (VAR) is necessary to raise the power factor to about 95%?A 3-phase induction motor runs at 3% slip and develops mechanical power equal to 10 kW. The air gap power is 9.7 kW 10 17) kW 0.97 100.30 kW 10.03 kWA triangle waveform with following specifications in Table B1. Table B1 RMS Voltage 50mV Number of cycles/second 100 i) Sketch the approximate triangular waveform with all specifications. ii) A transformer has primary coil with 100 turns and secondary coil with 120 turns. Estimate the current in the secondary coil, If the current in the primary coil is 4 Ampere
- Calculate the voltage per phase for a 3-phase 1500 rpm, 4-pole alternator having a double layer winding with 16 turns per coil. The slots per pole per phase are 8 and the coil span is 20 slots. The phase spread is 60° and the flux per pole is 25.8x10−3 weber.For figure (1)draw and calculate the voltages waveform across each half of secondary winding and across load when 100sin2π60t applied across the primary, then find PIV.The rotor of a 4-pole ac generator is wound with a 200 turns coil. If the flux per pole is 5 mWb and the rotor runs at a speed of 1500 rpm, the rms value of the induced voltage for this AC generator is nearly?
- Correct the power factor for a motor connected in series with a 120V RMS 60Hz power supply. The motor has an inductance of 200mH and an internal resistance of 30 ohms.iii) A sine waveform with following specifications. RMS voltage 161.4V Time for ten cycles 0.02s Sketch the waveform.A 230 V, 50 Hz single-phase induction motor takes a current of 25 A at a PF of 0.45 lagging. Calculate the value of capacitor required to correct the PF to 0.9 lagging.