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Q. A 10-kVA, 200:400-V, single-phase transformer gave these test results:
• Open-circuit test (LVwinding supplied): 200V, 3.2 A, 450 W
• Short-circuit test (HV winding supplied): 38 V, 25 A, 600 W
Compute the efficiency when the transformer delivers half its rated kVA at 0.85 power factor lagging.
What is transfer function
Q. Determine the voltages V x using voltage division and equivalent resistor reductions for the circuits shown in Figure.
Q. An integrator with positive voltage on a noninverting input is shown in Figure. Sketch v o for 60 ms after S has been opened.
Out of a long-term record of precipitation for four adjacent stations you find that records of one station (station D) are missing for the spring months, September, October, and No
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Power Control A chopper converts fixed de input voltage to a controllable dc output voltage. It is the single stage dc to dc conversion device. It is a high speed on/ of
Permanent magnets are made of (A) Soft magnetic materials. (B) Hard magnetic materials. (C) Semi conductors. (D) Super conductors.
a short review article on the classification of time frame
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Derive Lame's equation for a thick cylinder subjected to internal pressure with clean diagrams. Evaluate the maximum and minimum hoop stresses across the section of a pipe of400
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