Which of the following devices has the highest input impedance?

The forward voltage drop across a silicon diode is approximately

A half-adder circuit can be built using

The number of states in a 3-bit counter is

The propagation mode used in optical fiber is

Which filter is most effective for reducing ripple in a power supply?

The most commonly used rectifier in power supply circuits is

Which modulation technique is most immune to noise?

The bandwidth of a signal with 3 kHz audio frequency in AM is

Which logic gate is known as a "Universal gate" ?

The number of flip-flop required for a MOD-32 counter is

The laplace transform of e^(at) u(t) is

The antenna used in satellite is

The wave which propagates along the earth's surface is

The main advantage of optical fiber communication is

The unit of power spectral density(PSD) is

Which multiplexing technique is used in telephones networks?

The maximum number of distinguishable states in a 3-bit digital signal is

In microprocessors, pipelining improves performance mainly by