List of top Questions asked in Andhra Pradesh Post Graduate Engineering Common Entrance Test

For a single frequency value, the most sensitive detector is:
What is the frequency range for a headphone as a detector?
In eddy current damping, the disc of an instrument is made of a material that is:

Match List-I (Instrument) and List-II (Error) and select the correct answer using the code given below the lists:

List-I (Instrument) List-II (Error) 
A.PAMC voltmeterP.Eddy current error 
B.AC ammeterQ.Phase angle error 
C.Current TransformerR.Braking system error 
D.Energy meterS.Temperature error
In a CRT the magnitude of the beam current can be adjusted by a front panel control marked:
In general, fluid friction damping is not employed in indicating instruments although one can find its use in:
The Servo motor differs from standard motor principally in that, it has:
State space analysis is applicable even if the initial conditions are:
The characteristic equation of a system is given by, \[ s^5 + 10s^3 + 5s^2 + 2 = 0 \] This system is:
Consider the following statements:
A system is said to be stable if its output is bounded for any input.
A system is stable if all the roots of the characteristic equation lie in the right half of the s-plane.
A system is stable if all the roots of the characteristic equation have negative real parts.
A second order system is always stable for finite positive values of open loop gain. Which of the above statements are correct?
Which of the following effects in the system is NOT caused by negative feedback?
Which technique gives quick transient and stability response?
Which mechanism in control engineering implies an ability to measure the state by taking measurements at output?
An alternator having an induced emf of 1.6 p.u. is connected to an infinite bus of 1 p.u. If the busbar has reactance of 0.6 p.u. and alternator has reactance of 0.2 p.u., what is the maximum power that can be transferred?
Which of the following types of faults does a bus differential relay NOT effectively detect?
In a bode magnitude plot, which one of the following slopes would be exhibited at high frequencies by a 4th order all-pole system?
In a 220kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 micro Farads. The value of the resistor required to be connected across the breaker contacts which will give no transient oscillations is:
Consider a feedback system with gain margin of about 30. At what point does the Nyquist plot cross the negative real axis?
In a multi-machine interconnected power system, subsequent to a 3-phase fault, the transient stability is examined by:
The Y-bus matrix of a 100-bus interconnected system is 90% sparse. Hence the number of transmission lines in the system must be:
For a given power system, its zero and maximum regulation will occur at the impedance angle of:
Which of the following is not a requirement for site selection of a hydroelectric power plant?
Which of the following circuit breakers take minimum time in installation?
Which component of gas turbine power plant is the main cause of its low efficiency?
A protection system engineer is planning to provide complete protection for a 3-phase transmission line. He can achieve this by: