What is a square wave generator?

The cut-off wavelength (in  μ m) of light that can be used for intrinsic excitation of a semiconductor material of band-gap Eg =1.1 eV is 

Determine the average value of the DC output from the chopper. Given T = 1 ms, T_ON = 0.5 ms, and the supply voltage is 50 V.

A regular op amp has a gain bandwidth product of 15MHz. This op amp is used in a non-inverting configuration which has a voltage gain of 40dB. What is the -3dB Bandwidth of the amplifier?

Consider a common source amplifier with drain resistance (Rd) = load resistance (RL) = 12 kΩ, transconductance (gm) = 2 mS, and output resistance (r0) = 120 kΩ. Calculate the voltage gain (Av) of the amplifier.

Which of the following statements about electron mobility in germanium (Ge) and silicon (Si) is correct?

The concentration of minority carriers in an extrinsic semiconductor under equilibrium is

Given that:

A: Voltage gain of op-amp decreases at high frequencies
B: Its internal structure uses a compensation capacitor

Which of the following defines the threshold voltage of a MOSFET correctly?

Which one of the following is not a real difference between passive and active filters?