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A three-phase induction motor is wound for four poles and is supplied from a 50 Hz system. Calculate:
(a) the synchronous speed;
(b) the speed of the rotor when the slip is 4 per cent;
(c) the rotor frequency when the speed of the rotor is 600 r/min.
Find an expression for the rms (root-mean-square) speed of these particles, assuming them to be spheres of diameter and density
When this combination is connected across a battery, the current delivered by the battery is 0.330 A. When the 43.0 W resistor is disconnected, the current from the battery drops to 0.190 A. Determine the emf of the battery.
A woman is standing in the ocean, and she notices that after a wave crest passes by, five more crests pass in a time of 37.7 s. The distance between two successive crests is 34.7 m. What is the wave's (a) period, (b) frequency, (c) wavelength, and..
The power density 50km from a transmitting antenna is 0.5 uW/m^2. If the frequency is 2 GHz and the antenna gain is 30 dB, determine the transmitter power.
A 240kW 500V 1750 r/min separately excited dc generator has an overall efiiciency of 94%. The shunt field resistance is 60 ohms and the rated current is 5A. The I^2 R loss in the armature is 0.023 pu.
Draw a circuit of a mulitplier using only combinational circuits. Construct your multiplier for X*Y, where X and Y both are2 bit binary numbers
The output voltage should be 5 V, but is ~1.25 V. This output voltage is independent of the power supply voltage. That is, no matter how high or low I set the power supply voltage, the output voltage is ~1.25 V as long as the input voltage is 50 mV.
q.no3show that the current through two transistors in series is equal to the current through a single transistor of
A dc shunt machine is connected to 220 volt supply and is running at speed of 1200 r.p.m . its armature current is 60 amp and the torque of its shaft is 95 Nm . show whether the machine in running as a motor or generator.
In this simulation, the red green and blue charges are originally at the vertices of an isosceles triangle. The green and blue are fixed in space and the red charge is allowed to move. Find the Net Coulomb force (magnitude and direction) on the r..
Architecture for Real-time systems - A discussion of design issues in real-time systems using multicore architectures
rc ciruit current course 3u-t a in parrallel to 6k ohm resistor and 5uf cap. determine the instantaneous power
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