- A Coupling Magnetic Field Inside A Rotating Machine Or Static Machine Like Transformers Must Involve With 1 Electrica 1 (130.83 KiB) Viewed 20 times
. A coupling magnetic field inside a rotating machine or static machine-like transformers must involve with 1. electrical system to extract energy from electrical system. II. mechanical system to extract energy from electrical system. a) Only I is true b) Only II is true c) I and II are true d) I and II are false 7. Consider a single-phase synchronous machine of cylindrical rotor type. A single-phase supply is given to the stator winding and a voltmeter is connected across rotor winding. For what value of Or, the voltmeter reads maximum? a) 90° b) 0° c) 45° d) 30° 8. In an electro-mechanical energy conversion device, which of the following statements are correct regarding the coupling field? (i) electrical side is associated with emf and current (ii) electrical side is associated with torque and speed (iii) mechanical side is associated with emf and current (iv) mechanical side is associated with torque and speed a) (i) & (ii) b) (ii) & (iii) c) (iii) & (iv) d) (i) and (iv) 9.The primary and secondary of a transformer are connected. coupled but a) magnetically, not electrically b) electrically, not magnetically c) magnetically, also magnetically d) electrically, also electrically