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The stator and rotor of a three-phase, 440-V, 15-hp, 60-Hz, eight-pole, wound-rotor induction motor are both connected in wye and have the following parameters per phase: R1 = 0.5 , R2 = 0.1 , Xl1 = 1.25 , and Xl2 = 0.2 . The magnetizing impedance is 40and the core loss impedance is 360 , both referred to the stator. The ratio of effective stator turns to effective rotor turns is 2.5. The friction andwindage losses total 200 W, and the stray-load loss is estimated as 100 W. Using the equivalent circuit, calculate the following values for a slip of 0.05 when the motor is operated at rated voltage and frequency applied to the stator, with the rotor slip rings short-circuited: stator input current, power factor at the stator terminals, current in the rotor winding, output power, output torque, and ef?ciency.
HLT Halt Instruction The microprocessor halts the execution of the program and enters into the wait state the address and data bus are placed in the high impedance st
Using star-delta transformation, calculate the current flow through RL.
Frequency variation in simple transmitters can be reduced by adding a _______ stage.
A slight modification of the elevator algorithm for scheduling disk requests is to always scan in the same direction, In what respect is this modified algorithm better than the ele
(a) What is understand by clipping circuit. Draw and illustrate different types of diode clipping circuits? (b) With the help of circuit diagram describe the working of centre t
In order to demonstrate aliasing, make a plot of the signal x(t) = 3 cos 2π10t - cos 2π30t which approximates a square wave with W = 30 Hz. If the sample points are taken at
Q. On a CD amplifier R s = 4k?, µ =50 and r =35k?. Evaluate the voltage gain A v . A v = V o /V i = µRs / (µ+1)Rs + r
Q. Explain Standard set of procedure used in Completing a call? Completing a local telephone call between two subscribers linked to the same telephone switch is accomplished th
Unit to measure the electric charge Q?? The unit used to measure the quantity of electrical charge Q is called the coulomb C
What is the function performed by SIM instruction in 8085? SIM -Set Interrupt Mask. This instruction masks the interrupts as desired .it also sends out serial data by the seri
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