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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
Active-mode NPN transistors in circuits Figure: Structure and use of NPN transistor. Arrow according to schematic. The figure opposite is a schematic presentation
Q. Describe the time division switching? Ans: Space and Time Switching: Space Switches: Connections can be made between outgoing and incoming PCM highways by means of
Explain the function of the pins PSEN and EA of 8051. PSEN: PSEN stands for program store enable. In 8051 based system in which an external ROM holds the program code, this pin
A cylindrical shell with flat ends is of 1.5 m Internal diameter and 4 m length. It is subjected to an internal pressure of 300 N/cm 2 . The principal stress is not to exceed 15 K
Question: (a) Consider the following RC admittance function: (i) If the function is to be realised using the Cauer II Form, find the values of the different components
Equivalent Circuit of a DC Machine A review of the material presented with regard to elementary direct-current machines can be helpful at this stage to recall the principles of
With the help of neat sketch T-S diagram illustrate the working of simple air evaporative cooling system used in air craft. With the help of neat diagram and T-S diagram iillust
IGBT ( Insulated Gate Bipolar Transistor ) IGBT stands for insulated gate bipolar transistor. It is having the advantages of both power MOSFET and BJT. In IGBT layer is P
Q. A magnetic circuit is found to have an ac hysteresis loss of 10 W when the peak current is Im = 2 A. Assuming the exponent of Bm to be 1.5, estimate Ph for Im = 0.5A and 8A.
Question: (a) Explain the following metrics: (i) Throughput (ii) Latency (iii) IPC (b) Of the three factors in the equation (EXCPU = Number of instructions × CPI × cy
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