A) 0.8 lagging p.f. B) 0.8 leading p.f. C) Unity power factor D) None of the above. Ans : (B)
A) 200 W B) 400 W C) 450 W D) 800 W Ans : (C)
A) transformation ratio will be infinity B) core loss will be more than copper loss C) copper loss will be zero D) there will be maximum magnetic leakage. Ans : (C)
A) Infinity B) 100 kΩ C) 1 kΩ D) Zero. Ans : (A)
A) Resistance load B) Inductive load C) Capacitive load D) Any load. Ans : (C)
A) Resistive B) Either inductive or resistive C) Capacitive D) Inductive. Ans : (B)
A) will be in phase with the applied voltage B) will lead the applied voltage by about 90° C) will lag the applied voltage by about 90° D) will lag the applied voltage by. Ans : (D)
A) in the same ratio with emf on secondary winding as the voltage ratio B) less than the emf per turn of winding on secondary side C) more than the emf per turn of winding on secondary side D) the same as emf per turn of winding on secondary winding. Ans : (D)
A) 1.1 weber B) 1.2 weber C) 1.28 weber D) 1.5 weber. Ans : (A)
A) 192.5 W B) 287.5 W C) 212.6 W D) 300.2 W. Ans : (B)