GATE 2022 Rapid Revision Quiz 4

A voltage source of 60∠-30^o V is connected in parallel across a choke of resistance 4 Ω and inductive reactance of 3 Ω. If an impedance, Z = 6 – j8 is connected parallel across the choke, then the magnitude of the current supplied by voltage source is ………A.

A 3-ϕ, 50 Hz star connected alternator with 2-layer winding is running at 600 rpm. It has 12 turn/coil, 4 slots/pole/phase and a coil pitch of 10 slots. The winding factor at stator will be _

At no load condition, a 3-ϕ (50 Hz) lossless transmission line has sending end and receiving end voltages of 420 kV and 440 kV respectively. Assume the velocity of travelling wave to be 3×10⁵ km/s, find the length of the transmission line in km

The circuit shown below has R = 100 Ω, R_c = 2kΩ, R_L = 2kΩ. Also, assume a constant diode voltage of 0.6 V and capacitors are very large using the signal model for V_c = 1.6 V.

What is the Q-point value of the diode current (in mA) and the value of  is

Given that , Calculate the charge density at (1, π/4, 3) and then the total charge enclosed by the cylinder of radius 1m with –2 ≤ z ≤ 2m is?

A 220V, 8 pole, 11 kW motor has lap connected armature winding with 500 conductors. The mean flux density in the air gap under the interpoles is 0.1 Wb/m² on full load. If the radial gap length is 0.6 cm, the number of turns required on interpoles will be _________.