GATE 2023 Electrical Machines Quiz 27

An Isolation Transformer has Primary to Secondary turns ratio of

Transformers are rated in kVA instead of kW because

Why are transformer stampings varnished before being used to build the core?

Current needed to set up the flux in an ideal transformer will be

Consider the source, transformer and load shown in the figure below. When the switch is closed, the rms value of source current is

For the circuit shown in the figure if V_S = 10 V_rms and R = 420Ω. The average  power dissipated in the 1Ω resistor is_____.