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Q. A 75-kVA transformer has an iron loss of 1 kW and a full-load copper loss of 1 kW. If the transformer operates on the following load cycle, determine the all-day efficiency:
8 hours full load at unity power factor
8 hours no load
8 hours one-half full load at unity power factor
Q. Explain output CE characteristics? 1. In the active region ic increases slowly as Vce increases. The slope of the curved is greater than the CB output characteristics. In co
A 3 phase 60 hertz induction motor has 8 poles and operates with a slip of .05 for a certain load. Compute in r.p.m. the (a) Speed of the rotor with respect to the stator, (b
What is use of co-processor in a typical microprocessor based system. This is a processor that works in parallel with the major processor. This has its own set of specialized i
1. Write a MATLAB program to generate and plot the signal x1(n) = [3 2 -2 0 7], n = 0,1,2,3,4.
Commercial Losses in Electrical Systems Commercial losses are caused by pilferage, theft, defective meters, and errors in meter reading and in estimating un-metered supply of
How does the ITU make sure compatibility among the Radio systems used in dissimilar countries? Why is regulation so significant?
how emitter current equal to collector current
Dielectric materials are (A) Insulating materials. (B) Semiconducting materials. (C) Magnetic materials. (D) Ferroelectric materials. Ans:
A three-phase, wye-connected, 2300-V, four pole, 1000-kVA, 60-Hz synchronous machine has a synchronous reactanceXs = 5, a field resistance Rf = 10, and an approximately linear ma
Discuss the DWORD assembler directive with example. DWORD: This defines word type variable. The described variable may have one or more initial values into the dire
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