1. (a) Sketch the load characteristics, terminal voltage/load current, of the following types of DC generator: (i) series-connected, (ii) shunt-connected and (iii) compound-connected. (b) State one purpose for which….
Why it the tungsten–halogen lamp more efficient than a normal tungsten filament lamp?
1.Why it the tungsten–halogen lamp more efficient than a normal tungstenfilament
lamp?2. Explain in simple terms how electromagnetic radiation is emitted from a lowpressure gas or vapour when an electric current is flowing in it. Indicate how current can flow in the gas or vapour. 3.Why is a ballast needed for the operation of a discharge lamp? Explain why a
ballast used will be more efficient if it takes the form of choke rather than a resistor.