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Q. From a three-phase, 60-Hz system, through a motor-generator set consisting of two directly coupled synchronous machines, electric power is supplied to a three-phase, 50-Hz system.
(a) Determine the minimum number of poles for the motor.
(b) Determine the minimum number of poles for the generator.
(c) With the number of poles decided, find the speed in r/min at which the motor-generator set will operate.
Write a short explanation of the principles of super-heterodyne receiver. It may help to use sample block diagram to state the process. Why is the production of the intermediate fr
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Q. For a 10-bit R-2R ladder-network D/A converter with an MSB resistor value of 10 k, what is the value of the LSB resistor?
What are the modes used in keyboard modes? 1. Scanned Keyboard mode with 2 Key Lockout. 2. Scanned Keyboard particular Error Mode. 3. Scanned Keyboard with N-key Rollover
(a) For a series RLC resonant circuit, find an expression for the voltage across the resistance VR and obtain the ratio V R /V S , where V S is the applied voltage. Identify the e
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Q. Explain Resistance-capacitance coupling? It is the most commonly used coupling in discrete device amplifier as it is least expensive and has satisfactory frequency response.
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