A) 1,500 rpm B) 750 rpm C) 375 rpm D) 720 rpm ✅ Answer: D) 720 rpm 🧠Detailed Solution 🔹 1. Given Data: Supply frequency → f = 50 Hz Rotor frequency → f r = 2 Hz Number of poles → P = 8 🔹 2. Calculate Synchr…
(a) 15 A. (b) 2 A. (c) Zero A. (d) none of the above. Answer: (b) 2 A. Explanation: CONCEPT: Inductor in DC Circuit In a DC circuit: At Switching ON (Transient State) Inductor opposes change in current Ind…
(a) increased by 10%. (b) reduced by 20%. (c) increased by 8%. (d) decreased by 8%. Answer: (c) increased by 8%. Explanation: CONCEPT: EMF Equation of DC Generator The generated EMF of a DC generator is given by: …
(a) zero. (b) very small, say about 2 or 3 V. (c) about 100 V. (d) 250 V. Answer: (b) very small, say about 2 or 3 V. Explanation: CONCEPT: Residual Magnetism in DC Generators In a DC generator, even when no field curr…
