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AC Machines:
We have learnt the fundamental concepts of the transformer, induction motors and special type fractional kilowatt (kW) machines. In the section of transformer you have learned the basic construction, operation principle and testing of the transformers. You have also learnt about the induction motor construction and working principle. Further in the section of induction motors we have focused on the beginning and speed control of induction motors, applications of the induction motors. In the section of single-phase and special purpose motors you have learnt regarding universal motors, servomotors and permanent magnet DC motors.
Q. What is right-through routing? In right-through routing, originating exchange determines complete route from source to destination. No routing decisions are taken at interme
how does synchronous machines operate
Phasor relation between different voltages and currents: In the capacitive circuit of Figure, find 1. Impedance, 2. Resultant current, 3. Power factor,
In real life, transformers have losses which cause their behaviour to deviate from the ideal. Explain the reasons for this non-ideal behaviour
Q. A charge q(t) = 50 + 1.0t C flows into an electric component. Find the current flow.
When a current is passed through a conductor, a magnetic field is created in its surroundings. We can represent this magnetic field by drawing 'field (or 'flux') lines' with two
a) Write down a short note on compensators. b) Classify filter with relevant sketches. c) Illustrate the principle and working of Analog to Digital converter.
Q. Explain about Dial Pulses? Dial pulsing (sometimes known as rotary dial pulsing) is the method basically used to transfer digits from a telephone set to the local switch. Pu
Suppose that the x rays are emitted from a focal spot isotropically. The photon flux is 3.28 x 10 6 photons mm -2 sec -1 at a distance of 0.75 m from the focal spot. What is the
Q. For a parallel-plate capacitor with plates of area A m 2 and separation d m in air, the capacitance in farads may be computed from the approximate relation Compute the
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