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Q. Explain stages of attending to Rail fracture?
Various stages of attending to Rail fracture / weld failure in a L.W.R. track in field -
Equipment required -
i) Special 1 meter long fishplates with screw clamps and Joggled fishplates with bolted clamps (for fractures at welded joints) .
ii) Steel tape capable of reading up to one mm.
iii) Alumino-thermic welding and finishing equipment.
iv) Equipment for destressing.
v) 6.5 meter long sawn rail cut piece of the same section as LWR duly tested by USFD.
vi) Rail closures of suitable lengths.
vii) Equipment for protection of track.
viii) Equipment for night working.
With the help of neat and clean diagram illustrate the working of Elecro Static Precipitator (ESP). Describe the following: (a) Coal Handling Systems (b) Coal Storage
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Q. You are to construct a modified truth table for the circuit realization of the SRFF shown in Figure. As indicated in the text, you guess an output and then go back ato check it
how harmonics shows effect on power systems?
Q. What are the features of clamping circuits? The clamping circuit does not change the peak to peak or r.m.s value of the waveform .Thus the input waveform and clamped output
Starting Methods for Polyphase Induction Motors When high starting torques are required, a wound-rotor induction motor, with external resistances inserted in its rotor circuits
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Q. What are concentrators? Elucidate how it helps in connecting number of subscribers. Ans: In rural areas, subscribers are usually dispersed. It is both expensive and unn
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Q. Obtain the Thévenin and Norton equivalent circuits for the portion of the circuit to the left of terminals a-b in Figure, and find the current in the 200- resistance.
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