UPPCL AE 2019: Technical Quiz 4

The potential field at any point a space containing a dietetic material of relative permittivity of 3 is given by V = 5x²y + 3yz² + 6xz volts, where x, y, z is in meters. Calculate the volume charge density at point (1, 2, 3)

Which of the below systems doesn’t undergo resonance?

Transformer utilization factor (TUF) for the rectifiers is

Stability factor for the transistor amplifier circuit shown in figure is

Which of the following is the operation of induction motor?

A separately excited DC shunt motor is driving a fan load whose torque is proportional to the square of the speed. When 100V are applied to the motor, the current taken by the motor is 8A, with the speed being 500rpm. At what applied voltage does the speed reach 750rpm and then what is the current drawn by the armature? Assume the armature circuit resistance to be 1Ω. Neglect brush drop and mechanical losses.

Which method is better for load flow analysis of large power system?

What is the fundamental time period of