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a 3-phase slip ring induction motor gives a reading of 60volts,across a slip ring of open circuit. When at rest with normal statervoltage applied, the rotor is star connected and has an impedanceof (0.6+6j)Ω per phase. Find the rotor current when the machines is(i) At standstill with sliprings joined to a star connected starterwith phase impedance of (5+4j)Ω.(ii) Running normally with 4% slip.
Determine the minimun number of 20 Acircuits required to supply the general lighting load in a residence of 1750 sq ft. in terms of good design practice, what is the max of receptacles allowed on a dedicated small appliance branch circuit
Consider two discrete sequences: x = [7.7, 5.2, 2.2] y = [1.0, 9.3, 3.1] Let z be the convolution of x and y. What is the 4th non-zero value of z (from the left)
Ten multimode glass fibers (n1 = 1.48, n2 = 1.45) are spliced together. Each fiber is 2 km long and has a loss rate 2-dB/km. Each splice adds 1 dB of loss. If the output power of the source is 7 dBm and radiates uniformly in a 60 degree half cone
A. Determine the transfer function H(z) for this system. B. Determine the z transform Ys(z) of the step response for this discrete time LTI system using complex domain (not time domain) analysis techniques.
A DC voltmeter is rated at 14 bits of resolution and has a full-scale input range of ±5V. Assuming the meter's ADC is ideal, what is the maximum quantization error that we can expect from the meter.
what is the perceived colour if you mix red ,green and blue dyes in equal proportion and why What about red and green frequiencies only
A dielectric sphere has radius r = 2 and the material inside the sphere has dielectric constant er2 = 4. THe region outside the sphere where r > 2 is free space and the electric field there is E1=(16r+2+8\phi). Find electric field E2 inside the sp..
The hole concentration in p-type GaAs is given by p=10^16 (1-x/L)/cm^3 for 0
The average power used by the resistor is what you pay to the electric company, but there is also reactive power for which you do not. The complex power supplied to the circuit is defined as: P = ½ V s I*
A modulating signal consists of two sinusoidal components: 1 kHz and 3 kHz. The transmitter carrier frequency is 80 kHz. Assume in a SSB-USB modulated signal that the inserted carrier at the receiver is 200 Hz too high.
a digital channel is described by 16 QAM, the data rate is 50 Mbps, the bandwidth is 200 MHz, the power is 1 W, and the received noise level is 50 mW. Resolve for SNR, Baud Rate and the Max theoretical bit rate for the channel.
The synchronous reactance of the generator is j1.35 per unit. Neglect armature resistance, armature resistance equals zero ohms. Both perunit impedances were calculated on the base MVA rating of thegenerator which is 75 MVA.
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