Types of DC Machines Starter Quiz

What will happen, if the residual flux is reversed in a shunt generator, which is building a voltage normally?

Which of the following cumulative compound generator has zero V.R?

Improved commutation in DC machines can be achieved by

The emf induced in each coil side of a coil is 20V and the coil sides lies under opposite poles. The induced emf in them is______ (in V).

Find the resistance of load which takes a power of 10kW from a shunt generator whose external characteristics are shown below:

In a 220 volt long shunt compound generator, the resistance of armature, shunt and series winding are 0.05Ω, 110Ω and 0.5Ω respectively. The load consists of 110 lamps connected in parallel, each rated at 55W, 110V. What will be the voltage drop in series field winding _________ in V.