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Q. A 10-kW, 250-V dc shunt generator, having an armature resistance of 0.1and a field resistance of 250 , delivers full load at rated voltage and 800 r/min. The machine is now run as a motor while taking 10 kW at 250 V. Neglect the brush - contact drop. Determine the speed of the motor.
Balanced Score Card and Key Performance Indicators Every successful organization measures its performance across the subsequent parameters, for dissemination to all stakeholde
Guarding Against Loss in Transformers Distribution transformers are expected to convert up to 95-98% of the input power into usable output power. A distribution transformers i
(a) Explain what asynchronous transmission is and give two advantages and two disadvantages of using this type of transmission. (b) One of the goals of multiplexing is efficienc
Q. Amicrowave relay systemuses two identical horn antennas mounted on towers spaced 40 km apart. If f c = 6 GHz, and each relay hop has L = 60 dB, calculate the antenna aperture a
Referring to Figure, let boxes 2, 3, and 5 consist of a 0.2-H inductor, a 5- resistor, and a 0.1-F capacitor, respectively. Given A = 5, and v 1 = 10 sin 10t, i 2 = 5 sin 10t ,
a. Describe why a three-phase induction motor rotates always with a speed less than the synchronous speed. b. State the principle of operation of a capacitor start single-phase
One battery having of four cells, connected in series. Emf of each cell is 1.45V and internal resistance of 0.04Ω. if a load resistance of 5Ω is connected to the battery, draw the
Explain the effect of impurity on the conductivity of a semiconductor. To form a semi-conductor conductive, a small amount of appropriate impurity is added. This is then termed
Transmission: The policy emphasizes in which adequate and timely investment along within efficient and coordinated operation is essential for developing a robust and integrate
What is Microprocessor? Give the power supply & clock frequency of 8085. A microprocessor is a multipurpose, programmable logic device that reads binary instructions from a sto
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