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An induction motor has thefollowing specifications: a 8-pole squirrel cage rotor, operates at25 hp off of a 220 V line-to-line 3-phase service, 60 Hz, 64 amps of line current, and under full load runs at 830 RPM. The motordraws 20.8 kW at full load.(i) Calculate the slip.
(ii) Determine the percent speed regulation if the no-load speed is895 RPM.
(iii) Determine the power factor of the induction motor.
(iv) Determine the motor torque in ft-pounds.
(v) Determine the percent power efficiency of this induction motor.
Design a 3:2 priority encoder. It will take inputs D3, D2, and D1, and produce A1 and A0. If exactly one of the inputs is true, the output is the binary number corresponding to the input number (D3 -> 11, D2 -> 10, D1 -> 01).
When the motor runs at 1710 rpm, the line currentdrawn from the supply is 78 A at 0.85 PF lagging. Given that,stator iron loss is 2kW, windage and friction losses are 1.2kW andresistance between two stator terminals = 0.4W
A twelve pole, 480V, 60Hz synchronous motor has a reactance of 5 ohm. The field current is adjusted so that the equivalent field voltage Ef is 520V (line-to-line). Calculate the following: (a) Maximum torque. (b) Power factor at the maximum torque..
Design an elevator controller for a simple two-floor elevator. On the 1st floor, there is only an up button, and on the 2nd floor, there is only a down button. Within the elevator, there are two buttons: door open and door close.
Determine the power produced at 2 PM on December 21st from a 10 square meters south facing solar array oriented at 45 degrees from horizontal and located in Atlanta , GA. Use nominal efficiency data for single crystal silicon solar cells.
A 4.8 mF capacitor has been charged to11 V. The energy storedin the capacitor is used to light up a 0.3 KOhm lamp. Find the current flowing through the lamp 2.1 sec after the switch was turned on.
Explanation of the circuit: Two opamps on the top are the buffer amplifiers before and after sampler. Sampler is a JFET used as analog switch; its gate is driven by the narrow pulse train as specified above. There are two identical active lowpass ..
A cyclotron used to accelerate alpha [articles (m=6.55 x 10^-27kg, q=3.2x10^19C) has a radius pf .50, and a magnetic field of 1.8T (a)what is the period of revolution of the alpha particles (b)what is their kinetic energy
Frequency Range, Local Oscillator Frequency, Image Frequency, and Attenuation, A radio receiver for the AM broadcast band covers the frequency range 550 to 1600 kHz. The IF frequency is 455 kHz and the local oscillator is above the received signal..
Design a full wave (60Hz) rectifier circuit with the capacitor filter that produces 5V 10A DC at the output with the ripple voltage of less than 5%. (Assume Von = 1 for the diodes and do not forget to draw your circuit and a time diagram of the vo..
Mrs. Brooke owns a robot with an FSM brain. The robot walks from left to right along a paper type containing a sequence of 1's and 0's. On each clock cycle, the robot walks to the next bit.
If this op amp is used in a non-inverting amplifier having a closed loop dc gain of 100, sketch the bode plot of the magnitude of the closed loop gain to scale. Repeat for a closed-loop dc gain of 10.
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