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Athree-phase, 440-V, 60-Hz, four-pole induction motor operates at a slip of 0.025 at full load, with its rotor circuit short-circuited. This motor is to be operated on a 50-Hz supply so that the air-gap ?ux wave has the same amplitude at the same torque as on a 60-Hz supply. Determine the 50- Hz applied voltage and the slip atwhich themotor will develop a torque equal to its 60-Hz full-load value.
What is the Direction of a line of flux The direction of a line of flux is from the north pole to the south pole on the exterior of the magnet and is then supposed to continue
A heater element is made of nichrome wire having resistivity equal to 100 × 10 -8 ohm-m. The diameter of the wire is 0.4mm. Calculate the length of the wire required to get a resi
The sinusoidal voltage source in the circuit shown in Fig. is developing an rms voltage of 2000 V. The 4 ? load in the circuit is absorbing four times as much average power as the
Machine Language ( First Generation Language) As we have already discussed that all digital circuits can identify only two states which can be specified by 0 and i henc
Phasor relation between different voltages and currents: In the capacitive circuit of Figure, find 1. Impedance, 2. Resultant current, 3. Power factor,
Mechanical Structure of Depletion Type MOSFET The mechanical structure of this type of device is displayed in figure. In an IC, we would locate two n-type regions side by side
Earth Leakage : Earth leakage takes place when, through some fault in an appliance or its connections. Electric current escapes to earth i.e. the body of the appliance become 'liv
different types of probe
Q. Explain the operation of oscillators. Oscillator is a circuit that changes dc energy from the power supply into ac energy. An amplifier provided with a positive feedback bec
Add Register and Carry with Accumulator The contents of register R and the carry flag are added to the contents of the accumulator and result of addition is also sto
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