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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.
Q. JFET Common Drain Amplifier? The common drain FET amplifier is similar to the common collector configuration of the bipolar transistor. A general common drain JFET amplifier
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Risers: Riser Design : A riser or a feeder head is a passage of sand made in the cope to permit the molten metal to rise above the highest point in the casting after the mou
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Q. (a) Consider a three-phase star or wye half-wave recti?er with a purely resistive load R. Determine: (i) efficiency, (ii) formfactor, (iii) ripple factor, (iv) TUF, and (v) PIV
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