Electrical Engg (EEE) - MCQ Practice Questions

The transfer function of an ideal derivative controller is:

For a system G(s) = K(s+2)/[s(s+1)(s+3)], the number of asymptotes in root locus is:

For a cascaded system with G₁(s) = 5/(s+1) and G₂(s) = 2/(s+2), the overall DC gain is:

In digital control systems, the sampling theorem requires sampling frequency to be:

A second-order system has natural frequency ωn = 10 rad/s and damping ratio ζ = 0.5. The peak overshoot percentage is approximately:

A PID controller Gc(s) = Kp + Ki/s + Kd·s is applied to a process. Which parameter adjustment would primarily reduce steady-state error without affecting transient response significantly?

Which of the following is a unidirectional device in power electronics?

The forward voltage drop across a silicon diode at room temperature is approximately:

Which device is used to convert DC to AC power?

The peak inverse voltage (PIV) rating of a diode is important to prevent:

In MOSFET, the gate-source voltage at which current starts to flow is called:

In a buck converter, the output voltage is always:

The maximum frequency of a thyristor is typically limited by:

A PWM inverter with sinusoidal modulation produces output voltage with:

The presence of freewheeling diode in a DC motor drive is essential because it:

In a boost converter operating in continuous conduction mode (CCM), if the duty cycle is 0.5 and input voltage is 12V, what is the output voltage?

Which of the following devices is a unidirectional switch in power electronics?

In a half-bridge inverter, what is the minimum number of switches required to generate AC output from DC source?

What is the primary purpose of a freewheeling diode in a buck converter?

In a three-phase full-bridge inverter, the total number of thyristors required is: