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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
1) Assume that we are given the continuous-time signal xa (t) = xa1 (t) + xa2 (t) + xa3 (t), where, xa1 (t) = 2 + cos3 (2pf1 t + p 3 ) + 2 cos(2pf2 t), xa2 (t) = 2 cos(2pf3 t)
Frequency variation in simple transmitters can be reduced by adding a _______ stage.
Q. What effect do non-tradable goods have on PPP? Answer: The consequence is quite substantial. In 1997 the production of non-tradable goods accounted for about 55% of U.S GN
Q. The parameters of a BJT are given by α = 0.98, I CBO = 90 nA, and i C = 7.5 mA. Find β, iB, and iE.
series and parallel circuit
Q. Input bias current of operational amplifier? When operated at extremely low quiescent current values, the base bias currents will be low; but they do have to be taken into c
Immediate Addressing In this addressing mode that 8/16 bit data is specified in the instruction itself as its one of the operands. Normally the instructions using a
States Kirchoff's Voltage Law Kirchoff's Voltage Law (KVL) describes in any closed loop in a network, the algebraic sum Figure of the voltage drops (i.e. products of current
Q. How numbering plan is achieved in modern telephony? Ans: The purpose of numbering plan is to uniquely identify every subscriber connected to a telecommunication network.
what is the varactor diode?
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