PYQs Based test 9: Electrical Machines

In a constant $V/f$ induction motor drive, the slip at the maximum torque

Consider the table given:The correct combination that relates the constructional feature, machine type and mitigation is

If an ideal transformer has an inductive load element at port 2 as shown in the figure below, the equivalent inductance at port 1 is

A single 50 Hz synchronous generator on droop control was delivering 100 MW power to a system. Due to increase in load, generator power had to be increased by 10 MW, as a result of which, system frequency dropped to 49.75 Hz. Further increase in load in the system resulted in a frequency of 49.25 Hz. At this condition, the power in MW supplied by the generator is _____ (rounded off to 2 decimal places).

A DC shunt generator delivers $45A$ at a terminal voltage of $220V$. The armature and the shunt field resistances are $0.01\Omega and44\Omega$ respectively. The stray losses are $375W$. The percentage efficiency of the DC generator is ____________.