UPPSC AE Paper-2 Quiz-12

In a power circuit of 5KV, 6 thyristors each of rating 900 V are connected in series. What is the percentage series dreading factor?

Which of the following load will have better power factor when connected to single pulse rectifier?

The neutral of 10MVA, 11kV alternator is earthed through a resistance of 6Ω. The earth fault relay is set to operate at 2A . The CT’s have a ratio of 400/5 . What percentage of the alternate winding is protected?

Which relay is used to detect and protect internal faults in a transformer?

The rotor power output of a 3-phase IM is 12 kW and the corresponding slip is 4%. the rotor ohmic loss will be:

A 6-pole, 3-phase IM is supplied from a 60 Hz supply. Rotor resistance and reactance are 1.2 Ω and 15 Ω per phase respectively. Neglecting stator impedance, the speed at which it will develop maximum torque will be:

A 4-bit ripple counter and a 4-bit synchronous (parallel) counter are made using flipflops each with propagation delay of 20ns. If one more flipflop is added and converted them as 5-bit counters, determine the  for the mod-32 ripple and parallel counters respectively.

The critical field of a material is 10⁴ A/m at 10K and 2 × 10⁵ A/m at absolute zero temperature. Find the transition temperature of the element.

The reflection coefficient of 2 port network is 0.5, the return loss in the network is

The solution of the differential equation is: