The table lists two instrument transformers and their features:
| Instrument Transformers | Features |
|---|---|
| X) Current Transformer (CT) | P) Primary is connected in parallel to the grid |
| Y) Potential Transformer (PT) | Q) Open circuited secondary is not desirable |
| R) Primary current is the line current | |
| S) Secondary burden affects the primary current |
The correct matching of the two columns is
A three phase, 50 Hz, 6 pole induction motor runs at 960 rpm. The stator copper loss, core loss, and the rotational loss of the motor can be neglected. The percentage efficiency of the motor is
Which one of the following options represents possible voltage polarities in a single phase two winding transformer? Here, $V_p$ is the applied primary voltage, $E_p$ is the induced primary voltage, $V_s$ is the open circuit secondary voltage, and $E_s$ is the induced secondary voltage.
A 3-phase, 11 kV, 10 MVA synchronous generator is connected to an inductive load of power factor $(\sqrt{3}/2)$ via a lossless line with a per-phase inductive reactance of 5 $\Omega$. The per-phase synchronous reactance of the generator is 30 $\Omega$ with negligible armature resistance. If the generator is producing the rated current at the rated voltage, then the power factor at the terminal of the generator is