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Using the approximate equivalent circuit in which the shunt branch is moved to the stator in put terminals, show that the rotor current, torque, and electro magnetic power of a poly phase induction motor vary almost directly as the slip, for small values of slip.
Q. A two-winding system has its inductances given by where k 1 and k 2 are constants. Neglecting the winding resistances, derive an expression for the electric force when
Q. Derive the equations of the self bias circuit? A circuit which is used to establish a stable operating point is the self biasing configuration. The circuit is shown in Fig
Q. How do you differentiate between dual beam and dual trace oscilloscope? Sol. There are two separate vertical input channels A, B and these use separate attenuator and prea
input impedence
The Thevenin equivalent circuit at the terminals of R2 / S for a 60 hz, 6 pole induction motor is shown below. a) Find the value of the slip for maximum torque and the maximum t
(a) What do you understand by Detroit-type automation? (b) What are the situations under which the above kind of automation can be planned ?
Determine Impedance in each branch - delta connection: A delta connected balanced 3-phase load is supplied from a 3-phase 400 V supply. The line current is 30 Amp and the powe
The increase in the current is building up the magnetic field surrounding the coil. Energy is stored in that field. Consider the energy supplied by the voltage source during the
Provide Definition of Signals A continuous-time signal x(t) is a signal that is a function of real number t. For a discrete-time signal x[n], it is a method of discrete time in
material to produce analog oscilloscope
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