List of top Electrical Engineering Questions asked in TS PGECET

A digital frequency meter counts 5000 pulses during a gate time of 0.1 s. The measured frequency is

A silicon diode has a reverse saturation current of \(10^{-12}\text{ A}\) at 300 K. The approximate increase in temperature such that saturation current doubles is

A BJT in CE mode has \(\beta = 120\) and collector current \(I_C = 2.4\text{ mA}\). The small-signal transconductance at room temperature (\(V_T \approx 25\text{ mV}\)) is approximately

An analog instrument has a specified accuracy of \(\pm 1%\) of full-scale reading. If its full-scale value is 300 V and it reads 120 V, the maximum percentage error with respect to the indicated reading is

The transconductance of MOSFET in saturation is

A strain gauge has gauge factor 2.1 and nominal resistance \(120\ \Omega\). If it is subjected to a strain of \(1000\ \mu\varepsilon\), the change in resistance is

A current transformer has ratio 500/5. If the burden is 2 VA at rated secondary current, the corresponding burden impedance is

A moving-iron voltmeter reads correctly on DC. If connected to a 50 Hz sinusoidal AC source whose RMS value equals the DC value, then the reading will be

Resolution of a \(3\frac{1}{2}\) digit DVM is

A DC potentiometer has a potential gradient of 20 mV/cm. The balancing lengths for a standard cell and an unknown voltage are 75 cm and 120 cm respectively. If the standard cell voltage is 1.50 V, then the unknown voltage is

An energy meter makes 600 revolutions per kWh. If it makes 300 revolutions in 30 minutes, then the load power is

A PMMC instrument has full-scale deflection current of \(50\ \mu\text{A}\) and coil resistance of \(1\ \text{k}\Omega\). The resistance to be added in series to convert it into 10 V voltmeter is

Feeding the distributor at more than one point

Which of the following bridge is not used for the measurement of capacitance?

The state equation of a dynamical system is: \(\dot{X} = AX + Bu\), where \([A]\) is a \(3 \times 3\) system matrix and \([B]\) is a \(3 \times 1\) input matrix. Then the controllability matrix \(Q_c\) is

Choose the correct statement with reference to standard test signals

Time constant of a first order unit step input system is defined as the time at which unit step response reaches

Which of the following pair of electro-mechanical devices are part of Synchro?

Sensitivity of the following open loop system is:

Match the following electrical system with mechanical system based on current-force analogy:

The steady-state error of Type-2 system for a standard unit velocity input is

The centroid of the following system is \[ G(s)H(s) = \frac{K(s+10)(s+20)}{s^3(s+100)(s+800)} \]

For the following system, the angles of asymptotes are \[ G(s)H(s) = \frac{K}{s(s^2+2s+1)} \]

Natural frequency of oscillations of the following transfer function is \(\frac{C(s){R(s)} = \frac{1}{(s^2 + 0.5s + 1)}\):}

Compared with an induction motor, AC servo motor speed-torque characteristics and X/R ratio respectively are