A 3300 𝑉 , delta-connected motor has a synchronous reactance per phase (delta) of 18 Ω. It operates at a leading power factor of 0.707 when drawing 800 kW from the mains. The excitation emf will be:
A. 2871 𝑉
B. 2653 𝑉
C. 2435 𝑉
D. 2217 𝑉
Answer:A
A 3300 𝑉 , delta-connected motor has a synchronous reactance per phase (delta) of 18 Ω. It operates at a leading power factor of 0.707 when drawing 800 kW from the mains. The excitation emf will be:
A. 2871 𝑉 B. 2653 𝑉 C. 2435 𝑉 D. 2217 𝑉