A receiver has a noise figure of 2.8 dB. Calculate the noise ratio.

 A transistor with α = 0.95 and I_CBO = 20 μA is biased so that I_BQ = 100 μA. Then I_EQ will be ______ μA 

Which of the following is incorrect about an ideal Op-amp?

The abbreviation PIV in the case of a diode stands for ____________

Crossover distortion behaviour is characteristic of which amplifier class?

A practical op-amp has a bandwidth of only 10 Hz. The gain is 10⁶, and the required bandwidth is 100 kHz. How much negative feedback is required?

A binary channel with capacity 63 kbit/s is available for PCM voice transmission. If the signal is band-limited to 5 kHz, what are the appropriate values of the quantizing level L and the sampling frequency?

The primary reason for the widespread use of silicon in semiconductor device technology is

An iron core of length 20 cm and cross-sectional area of 3 cm² is wound with a coil of 200 turns. Over this coil is wound another coil of 250 turns. The relative permeability of the iron is 800. Determine the mutual inductance between the two coils.

Assertion (A): When a high reverse voltage is applied to a p-n junction, the diode breaks down.

Reason (R): High reverse voltage causes Avalanche effect.