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Q. A dc series motor operates at 750 r/min with a line current of 100 A from the 250-V mains. Its armature-circuit resistance is 0.15 and itsseries-field resistance is 0.1 . Assuming that the flux corresponding to a current of 25 A is 40% of that corresponding to a current of 100 A,determine the motor speed at a line current of 25 A at 250V.
A network function is given by (a) For x(t) = δ(t), obtain y(t). (b) For x(t) = u(t), obtain y(t). (c) For x(t) = e -4t , obtain y(t). (d) Express the differenti
Design a DC motor control system to run the 48V DC motor at 40rpm up to max load of the motor. You are responsible for designing the control of a 24V supply along with the speed s
Q. Explain working of Single-Phase Induction Motors? For reasons of simplicity and cost, a single-phase power supply is universally preferred for fractional-horsepower motors.
Design a MOD-6 synchronous counter using T Flip-Flops.
Q. Obtain the Thévenin and Norton equivalent circuits for the portion of the circuit to the left of terminals a-b in Figure, and find the current in the 200- resistance.
The transformer of Example is supplying full load (i.e., rated load of 50 kVA) at a rated secondary voltage of 240 V and 0.8 power factor lagging. Neglecting the exciting current o
what is ohm?
Explain Dielectric constant. Dielectric constant: This is also termed as 'Permittivity'. All insulating material possesses an electrical capacitance. Such capacitance of unit d
state applications of split phase motor
Q. Show Effects of Saliency and Saturation? Because of saliency, the reactancemeasured at the terminals of a salient-pole synchronousmachine as opposed to a cylindrical-rotor m
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