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Q. A wye-connected, three-phase, 50-Hz, six-pole synchronous alternator develops a voltage of 1000 V rms between the lines when the rotor dc field current is 3A. If this alternator is to generate 60-Hz voltages, find the new synchronous speed, and calculate the new terminal voltage for the same field current.
General Purpose Diodes The general purpose diodes have relatively high reverse recovery time. The diodes are general made by diffusion. They are used in low speed app
Paper is hygroscopic and absorbent. This statement is true or false. Ans: Paper is hygroscopic and absorbent. This statement is true.
DI Disable Interrupts Instruction The interrupt enable flip flop is reset and all the interrupts of 8085 microprocessors except TRAP are disabled . the instruction form
Q. How speech is transmitted in digital switching environment by using PCM/TDM? Ans: A digital carrier system is a communications system which uses digital pulses instead of
Q. (a) Consider a three-phase star or wye half-wave recti?er with a purely resistive load R. Determine: (i) efficiency, (ii) formfactor, (iii) ripple factor, (iv) TUF, and (v) PIV
what does electricity means?
Various compensation techniques
Q. A three-phase ac motor, used to drive a draft fan, is connected to a 60-Hz voltage supply. At noload, the speed is 1188 r/min; at full load, the speed drops to 1128 r/min. (a
RAL Rotate Accumulator Left Through Carry Instruction This instruction rotates the content of the accumulator towards left by one bit. The D 0 bit moves to D 1 bit moves
Q. Three single-phase, 10-kVA, 2400/120-V, 60- Hz transformers are connected to form a three- phase, 4160/208-V transformer bank. Each of the single-phase transformers has an equiv
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