List of top Questions asked in AP PGECET

Calculate the conversion time of a 12-bit counter type ADC with 1 MHz clock frequency to convert a full scale input?

For economic dispatch that neglects both line losses and generation limits _______.

A 50 Hz alternator is rated 500 MVA, 20 kV with \( X_d = 1.0 \) per unit and \( X''_d = 0.2 \) per unit. It supplies a purely resistive load of 400 MW at 20 kV. The load is connected directly across the generator terminals when a symmetrical fault occurs at the load terminals. The initial rms current in the generator is per unit is _______.

The rated voltage of a three-phase power system is given as _______.

The angle \( \delta \) in the swing equation of a synchronous generator is the:

The time duration of coasting in a speed-time curve refers to the period when _______.

The period of the discrete-time signal, \( \sin\left( \frac{6\pi n}{14} \right) \), is _______.

In an Anderson bridge, the unknown inductance is measured in terms of _______.

The DC and RMS components of currents in a half-wave rectifier are given by the relations?

Which method is preferred for solving the power flow problem in small to medium-sized power systems?

Penalty factors in economic dispatch with losses are used to:

The advantage of hydro-electric power station over thermal power station is:

A transistor has \( I_E = 10\, \text{mA} \) and \( h_{FE} = 0.98 \). The base and collector currents respectively are _______.

Fourier transform of \( a_1 f_1(t) + a_2 f_2(t) \) is ________.

Fourier transform of \( f(t) = 1 \) is ________.

A long two-wire line composed of solid ground conductors is 0.5 cm and the distance between their centres is 2 m. If this distance is doubled, then the inductance per unit length _______.

Loading effect is primarily caused by instruments having _______.

Which of the following systems is time invariant?

The main advantage of IGBT over MOSFET is _______.

A single-phase full bridge inverter is connected to a load of 24 \( \Omega \). The DC input voltage is 48 V. What is the rms output voltage at fundamental frequency?

Variable frequency drives (VFDs) are used in ________.

Which of the following is NOT a part of the typical speed-time curve for train movement?

The maximum reverse bias voltage that can be applied to a reverse biased PN junction diode without damaging the junction is called _______.

A 100 km long, three phase, 110 V, 50 Hz overhead transmission line has three conductors each diameter 1.5 cm. The conductors are spaced 2 m at the corners of equilateral triangle. The capacitance of the line is _______.

A transformer has no-load voltage of 220 V and full-load voltage of 210 V. Find voltage regulation.