(a) Discuss and compare various methods of electric braking. (10) (b)…
Previous year question for Utilization of Electrical Energy.
Question
(a) Discuss and compare various methods of electric braking. (10)
(b) A $500\text{ V}$ d.c. shunt motor having an efficiency of $85\%$ operates a hoist having an efficiency of $70\%$. Calculate the current taken from the supply in order to raise a load of $500\text{ kg}$, at $3\text{ m/s}$. If rheostatic braking is employed, what resistance must be put in the armature circuit in order to lower the load at the same speed. (10)
- Year: 2018
- Subject: Utilization of Electrical Energy