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A three-phase, 50-hp, 440-V, 60-Hz, four-pole, wound-rotor inductionmotor operates at a slip of 0.03 at full load,with its slip rings short-circuited. The motor is capable of developing a maximum torque of two times the full-load torque at rated voltage and frequency. The rotor resistance per phase referred to the stator is 0.1 . Neglect the stator resistance and rotational and stray-load losses. Find the rotor copper loss at full load and the speed atmaximumtorque.Compute the value of the per-phase rotor resistance (referred to the stator) that must be added in series to produce a starting torque equal to the maximum torque.
The magnetic field can be supplied by coils supplied from the output of the generator itself. This is known as self-excitation.There are three ways that the field coils can be conn
Illustrate about the Digital televisions Microprocessor would be used to control the below features, for instance: - Automatically tuning into television stations - allow
This question is designed to give you practice in manipulating circuit equations using j notation, and to demonstrate that techniques that you have already studied in the d.c. c
If E b /N 0 = 20 in a coherent ASK system, find the value of Eb/N0 that is needed in a noncoherent ASK system to yield the same value of Pe as the coherent system.
Design a logic circuit with 4 inputs A, B, C & D that will produce output ‘1’ only whenever two adjacent input variables are 1’s. A & D are also to be treated as adjacent, impleme
Explain Einstein relation. Einstein relation: There exists a significant relation between the diffusion constant and the mobility. It is termed as the Einstein relation and
A single-phase source delivers 100 kW to a load operating at 0.8 lagging power factor. In order to improve the system's efficiency, power factor improvement (correction) is achieve
Explain the CMP instruction . CMP: The comparison instruction is a subtraction which changes only the flag bits; the destination operand certainly not changes. A comparison is h
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Q. Draw and explain diode clipping circuit ? A diode clipping circuit can be used to limit the voltage swing of a signal. Clipper circuits are used to clip a portion of the w
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