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A dc 2-wire distributor AB is 500m long and is fed at both the ends at 240V. The loads of 100 A and 60 A are tapped from C and D that are at the distance of 100m and 250m from point A respectively.
Imply any two causes for the case of over voltages.
Explain the operation of Hartley oscillator with the help of appropriate circuit diagram and deduce the frequency of oscillation.
Specify the Barkhausen criterion for the oscillation.
Draw the speed torque characteristics and phasor diagrams of permanent magnetic synchronous motor and explain in detail.
A 500, 1 Phase synchronous motor provides a net output mechanical power of 7.46 KW and operates at the 0.9 pf lagging. Its effective resistance is 0.8 ohm. If iron and friction losses are 500 W and
Determine what switching frequency is needed to meet the ripple specifications.
Summarize the key architectural characteristics of these microcontrollers which you, as a designer, view significant.
Specify the differences between the salient pole and cylindrical rotor synchronous machines.
Write down the functions of a baffle in a heat exchanger.
Describe the surface charge distribution for the electric field intensity.
Give the PIN details of 8051 microcontroller and describe in detail.
Explain the operations that are performed when 8085 executes DAD H instruction.
Design the timing diagram for memory read and write cycle in 8085.
Describe the constructional details of DC generator with the help of neat sketch?
Write down the EMF equation of DC generator and explain each term?
Write down the BSR control word format in 8255.
Explain about Lloyd – Max quantizer in detail. Describe about Hadamard transform in detail and write down its properties.
Write down the various types of image compression techniques.
Describe the clearly Thermal breakdown mechanism in the Solid dielectrics.
Specify the requirement of the high voltage testing.
Draw a riveted butt joint to connect two plates of 14mm thick and determine its efficiency.
Describe the working principle of an axial air blast type circuit breaker with the help of neat diagram.
Provide the kinds of the electromagnetic relays.
Describe the several control techniques of the chopper controlled DC Drives.