UPPCL AE 2019: Technical Quiz 7 (App update required to attempt this test)

  If , the value of  around the closed circular quadrant shown given figure is

 

A power system has two synchronous generators . The governor turbine characteristic to the generators are P1 = 60(50 - f) , P2 = 80 (52-f)

Where f denotes the system frequency in Hz and P1 and P2 are respectively , the power outputs (in MW) of the turbine 1 and 2 . assuming the generators and transmission network to be lossless, the system frequency for a total load of 500 MW is ?

A CRO setup working in x-y mode is shown in figure below. If the input x (t) is a sinusoidal signal with amplitude of 12 units and, then the waveform observed on CRO screen will be

In the balanced AC Bridge shown below which of the following statements are correct regarding phasor quantities

1) The phasor voltage and are same.

2) Phasor lag behind phasor by some angle and leads by some angle from phasor.

3) Phasor and have a phase difference of 90° between them.

The open loop transfer function of a unity feedback system is. If the gain margin is 20 dB then the value of ‘k’ is_____?

Find the minimized logical expression for output ‘y’ for given statements.
(a) A,C are true
(b) A, B, C are true
(c) A, C are false
(d) A, B, C are false.
If the logical circuit has 3 inputs A,B,C and its output is Y?

A class A-transformer coupled transistor power amplifier is required of deliver a power output of 10 W. The maximum power rating of the transistor should not be less than