a) Explain the need of using Starters in DC Machines. Discuss the 3-p…
Previous year question for ELECTRICAL MACHINES-I.
Question
a) Explain the need of using Starters in DC Machines. Discuss the 3-point Starter in detail and also mention its drawback. (10)
b) A $75\text{ kW}$ shunt generator is operated at $230\text{ V}$. The rotational losses are $1810\text{ W}$ and shunt field circuit draws $5.35\text{ A}$. The armature circuit has a resistance of $0.035\text{ }\Omega$ and brush drop is $2.2\text{ V}$. Calculate i) total losses ii) output of prime mover and iii) efficiency at rated load. (10)
- Year: 2018
- Subject: ELECTRICAL MACHINES-I