## Ac machines, Electrical Engineering

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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.

#### Interpoles and compensating windings, Interpoles and Compensating Windings:...

Interpoles and Compensating Windings: The most generally used method for aiding commutation is by providing the machine with inter poles, also known as commutating poles, or si

#### #titte machines, what is a armature reaction ?? give some concepts on doub...

what is a armature reaction ?? give some concepts on double rotating field theory?? thanks

#### Explain magnetic property of ferromagnetic materials, The critical temperat...

The critical temperature above which the ferromagnetic materials lose their magnetic property is known as (A) Hysteresis.                                   (B) Curie point.

#### Simplest equivalent circuit topology using lumped elements, Simplest equiva...

Simplest equivalent circuit topology using lumped elements: For each of the Smith chart traces below, sketch (at the right of each chart) the simplest equivalent circuit topol

#### Explain the term full duplex transmission, Explain the term full duplex tra...

Explain the term full duplex transmission. Data can travel in both directions concurrently. There is no require to switch from transmit to receive mode as in half duplex. It's

#### Power supply and clock frequency - pins and signals , Power Supply  and C...

Power Supply  and Clock Frequency there are following  pins  for power  supply  and clock  frequency  signals. V CC + 5 V  power supply. V SS Ground reference X 1

#### Calculate the power dissipated in the amplifier, For the amplifier circuit ...

For the amplifier circuit shown in Figure with R i ≅ ∞,R o ≅ 0,A = 10,R L = 100 , and v in = 1 V, calculate the power dissipated in the amplifier if the voltage at the power-s

#### Compute the fourier transform, Compute the Fourier Transform of the followi...

Compute the Fourier Transform of the following function: f(x) = exp( - x 2 /(2σ 2 )) cos (2πx/k) where σ and k are constants. What is the minimum sampling rate required

#### What is message demodulation, Q. What is Message Demodulation? The majo...

Q. What is Message Demodulation? The major advantage of the conventional (standard) DSB AMsignal transmission is the ease with which the signal can be demodulated. Themessage s

#### Show bandwidth of the system, A communication system for a voice-band (3 kH...

A communication system for a voice-band (3 kHz) channel is designed for a received SNR E b /N 0 at the detector of 30 dB when the transmitter power is Ps =-3 dBW. Find the value o  