1.If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to

2.Which generator would you prefer for feeding long D.C. transmission lines ?

3.A D.C. generator works on the principle of

4.The open circuit voltage of a compound generator is 250 V. At full load the terminal voltage

5.Two D.C. shunt generators, each with armature resistance of 0.02 ohm and field resistance of 50 ohm run in parallel and supply a total current of 1000 amperes to the load circuit. If their e.m.fs. are 270 V and 265 V, their bus bar voltage will be