Electronics Engineering Interview Questions

Power factor correction

How the active power factor correction changes the wave shape of current drawn by a load to improve the power factor ?

Corrosion monitoring systems

Sir, I would like to know the approximate cost of the following corrosion monitoring systems. smart pebbles eci-1(embedded corrosion instrument) monitoring cables time domain reflectometry &corrosion penetration monitoring system(cpmp). can anyone pls help me out with the answer.... As soon as...

Arm in cpsr

Why does mode in arm in cpsr have 5 bits instead it can have only 3 bits to define all the 7 modes ?

Components making up a set top box, and a digital tv

A description of the fundamental elements that are required to make a digibox. I assume that they all record nowadays?

Steam outlet temperature in turbine

As we know,water boiling point temperature is 100 deg. In which liquid state is convert into the gas state,but in turbine which principle is use by which exhaust temperature is 50-55 deg and is in the stage of steam?

What is the max. Or min . Value of tv in msa to calculate r&r.

Why regeneration is not possible in semiconductor ?

Antenna length

Why length of antenna is taken as one half of wavelength or one fourth of wavelength? Why not one EIghth or one sixteenth?

Noise power output

Noise with uniform power spectral density of n0w/hz is passed through a filter h (w) = 2 exp(-jwtd) followed by an ideal low pass filter of bandwidth bhz. What is the output noise power in watts?

Binary data sequence

In a binary data sequence, the duration of symbol 0 or 1 is 1ms. If a carrier of freq 4khz is used in ask, what is the minimum transmission bandwidth required? What is min bandwidth?

Analog modulation

Why does sidebands vl come in case of analog modulation?

Mcb incoming side

In connections of mcb, is it necessary that the incoming side supply should be connected at top side of mcb.Whether this has any effect in tripping of mcb in case of fault ? ( if connected reverse, it will not trip ! )

Guitar tuner

What electronics are involved to build a device like a guitar tuner where you press a button to get a specific tone?

Rectangular filter

How rectangular filter are practically made?In vlsi chip 1000s of transistors are dopped, specifically categorized. Which method is used to achieve this & how it is done practically?

Guitar tuner

What electronics are involved to build a device like a guitar tuner where you press a button to get a specific tone

Reactance of conductor

How to calculate the rectance of conductor of different sizes?

Find conductivity, resistivity and resistance.

A silicon sample is 0.5 cm long and has a cross-sectional area of (50x10-4)2 cm 2. Find the conductivity, resistivity and resistance of the intrinsic sample. If the same sample is doped with a donor impurity to an extent of 1 atom per 10 6 atoms of silicon, find the new values of conductivity, resistivity...

8421 to 2421 code conversion

Design 8421 to 2421 binary code converter

EI pickups

Describe transducer EI pickups in instrumentation and control engineering.

Tem wave propagation in wave guides

In wave guides tem wave propagation is not exit, give the physical interpretation?