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Q. For a transmission-line model that includes only the series impedance Z, sketch phasor diagrams for:
(a) Lagging power factor load.
(b) Leading power factor load.
Q. What is the requirement of a hybrid in telephone networks? How does it work? Ans: Digital exchanges require receive and transmit signals on separate two-wire circuits. Th
Define some Huntington postulates - Boolean Algebra? Postulates 1. Commutative Law (a) A + B = B + A (b) A B = B A 2. Distributive Law (a) A (B + C) = A B + A
Q. For the circuit of Figure: (a) Find an expression for the power absorbed by the load as a function of RL. (b) Plot the power dissipated by the load as a function of the lo
Q. Compare RC coupled and Transformer coupling?
1. Introduction The objective of this assignment is to design and evaluate a stabilised discrete linear power supply. The power supply requires to be designed according to t
what is reactivecpower
Q. The self-inductances of two coupled coils are L 11 and L 22 , and the mutual inductance between them is M. Show that the effective inductance of the two coils in series is give
Q. The no-load and blocked-rotor tests conducted on a 110-V, single-phase induction motor yield the following data: • No-load test: input voltage 110 V, input current 3.7 A, and
For a 45-kVA, three-phase, wye-connected, 220- V synchronous machine at rated armature current, the short-circuit load loss (total for three phases) is 1.80 kWat a temperature of 2
In real life, transformers have losses which cause their behaviour to deviate from the ideal. Explain the reasons for this non-ideal behaviour
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