A) In direct ratio of their ratings B) In inverse ratio of their rating C) Equal D) Purely reactive. Ans : (B)
A) negative B) same C) positive D) reduce and may even became negative. Ans : (D)
A) 1 B) 2 C) 1.5 D) 0.5. Ans : (A)
A) 11 W, 20 W B) 16 W, 30 W C) 30 W, 45 W D) 22 W, 40 W. Ans : (D)
A) 15 B) 30 C) 50 D) 2500. Ans : (C)
A) 0.36 B) 0.42 C) 0.52 D) 0.62. Ans : (C)
A) 100 B) 50 C) 800 D) 200. Ans : (D)
A) near full load B) at 75 % of full load C) at 50 % of full load D) between 50 % and 75 % of full load. Ans : (A)
A) near full load B) near 75% of full load C) near 50 % of full load D) near no load. Ans : (C)
A) The output is sinusoidal and hence cannot be measured B) Losses are abnormally high C) Efficiency of transformer is usually high and hence extremely accurate measurements will be necessary D) Output is out of phase with respect to input. Ans : (C)