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A 20 h.p. , 3 phase, 400 volt, 60 hertz, 4 pole induction motor delivers full load at 5% slip. The mechanical rotational losses are 400W. Calculate
(a) The electromagnetic torque,
(b) The shaft torque, and
(c) Rotor copper losses.
Q. Derive the expression for generated emf in a dc generator. Ans. Expression for Generated emf in a DC Generator We shall now derive an expre
Q. Explain about Subscriber Loop System? Subscriber Loop System:Each subscriber in a telephone network is connected normally to the nearest switching office by a dedicated pair
Q. Counters are used to realize various dividers in the schematic representation of the digital clock shown in Figure. The blocks labeled "logic array" are logic gate combinations
Q. What do you mean by Inaccessible area coverage? Marshy lands, hilly areas, etc where ground surveys could be very difficult, remote sensing technique can provide reliable an
Q. Consider an RL series circuit excited by (a) v(t) = 20e -2t V, and (b) v(t) = 20 V. Determine the forced component of the voltage across the inductor for R = 2 and L = 2H.
Q. The DeMorgan's theorems suggest that the basic logic operations can be realized by use of inverters and NAND gates only. For the circuits shown in Figure, find the truth table,
TRAP has the maximum priority There are 2 types of interrupts external and internal. NMI has highest priority between all external interrupts,TRAP has highest priority between
CMC Complement Carry Instruction This instruction complements the carry flag i .e if the carry flag is 1 before the execution of this instruction it will be reset and if
what is the function of CBW in the microprocessor
Voltage Tripler and Quadrupler: Voltage Tripler an extension of the half wave voltage across each diode is 2Vm as it is for the filter capacitor circuit. It should be obvious
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