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Q. On a per-phase basis, let v = √2 V cos ωt and i = √2 I cos (ωt - θ).
(a) Express the instantaneous power s(t) in terms of real power P and reactive power Q.
(b) Now consider the energy E associated with the instantaneous power and show that E = Pt, where t is the duration of the time interval in seconds.
Q. A60-Hz, three-phase transmission line has a total per-phase series impedance of 35+j140 .Ifit delivers 40 MW at 220 kV and 0.9 power factor lagging, find: (a) The voltage, c
Problem (a) Figure gives the basic circuit of the diode limiter. Assuming that the diodes are ideal sketch and annotate the waveforms of the input voltage vi(t) and the load
What is meant by polling? In polling schemes, a set of address lines is driven by the controller to address every of the masters in sequence. When a bus request is received fro
Transmission: The policy emphasizes in which adequate and timely investment along within efficient and coordinated operation is essential for developing a robust and integrate
role of trigger circuit in cro
Specific orientation programme: at this stage, induction is conducted by the foreman. Induction is specific and requires skill on the part of the foreman. A new employee must be p
Q. In the non inverting summing amplifier of Figure, let R d = 1k and M = 6. Find R f so that v =
explain the operation principle
Unconditional Call Instruction CALL ( Unconditional Call) Instructions :This instruction calls the subroutine program stored at memory location specified in the instruction
Q. Show Balanced three-phase loads? Three-phase loads can be connected in either wye (also known as star or Y) or delta (otherwise known as mesh or ). If the load impedances i
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