In this tutorial, we are going to learn about Best Tutorial Electronics & Electrical Engineer Interview Questions & Answers.

**1) What the number of parasitic elements in yagi antenna?**

The number of 2 parasitic elements.

**2) What is the dominant mode in a rectangular waveguide is**

Dominant mode in a rectangular waveguide is TE11

**3) What is the value of ripple Factor for full-wave rectifier?**

The value of ripple Factor full-wave rectifier is 0.482

**4) Which of the following is not a type of capacitor?**

The wire wound is not a type of capacitor

**5) What is MASER?**

It is an amplifier

**6) Which device is used to measure Frequency?**

The Frequency is measured by Wien Bridge.

**7) What is the condition for minimum attenuation in a transmission line?**

** **The attenuation for transmission line is LG=CR.

**8) Which is the principle on Q-meter works?**

The Q-meter works series resonance.

**9 What is the full-wave rectifier of the rectification efficiency?**

** **The efficiency is rectifier of a full-wave81.2%.

**10) If the length of the antenna is increased, and then what will be directive gain?**

The antenna is directive gain increases.

**11) Which device is used to measure the inductance?**

The Inductance is measured Anderson Bridge.

**12) What is the sensitivity factor of strain gauge?**

The strain gauge is normally of the order of 1’5 to 2.0

**13) What is the transformer Utilization Factor for Bridge rectifier?**

The Utilization Factor for Bridge rectifier is 0.812

**14) What is the colour code of a 1M ohm resistor?**

The colour code of a 1M ohm resistor is brown, black green.

**15) What is a differential transformer?**

It a differential transformer Variable inductance pick-up.

**16) Which types of self-generating type transducers?**

The Self-generating type transducers are active

**17) What is Attenuation in Neper is equal?**

The Nerpe is equal to 0.1151Xattenuation in dB D. 86.86dB.

**18) When a Wheatstone bridge is balanced, the galvanometer reads?**

The galvanometer reads zero current.

**19) What is the modulation index of narrow –band FM signal?**

** **Index of narrow-band FM signal is zero current

**20) What is LED?**

It is Led p-n diode

**21) What is Peak Factor of a Half-wave rectifier?**

The half-wave rectifier is 2.

**22) What are the three primary colours?**

It is three primary colours red, blue and yellow

**23) What is the use of bridge T-network?**

The Bridge T-network can be used attenuator

**24) What is the value of ripple Factor for Half-wave rectifier?**

The ripple Factor Half-wave rectifier is 1.21

**25) What is the colour code of a 100 ohm resistor?**

The colour code 100 ohm resistor is brown, black, black, black, brown

**26) When Ttwo resistors R1 and R2 give combined resistance of 4.5E when in series and 1E when in parallel, then resistance?**

The1E when is in parallel, the resistance 1.SE and 3E

**27) How to work an inverse transducer converts?**

The transducer converts electrical energy to any other form of energy

**28) Transformer Utilization Factor for a full-wave rectifier is-**

The factor for a full- wave rectifier is 0.693.

**29) What is form Factor of a Half-wave rectifier?**

The 1.57 of a Half-wave rectifier is

**30) Which device is used to measure capacitance?**

The Capacitance is measured one of the following Shering Bridge.

**31) If a resistance strain gauge factor 2 is used as a transducer element. Neglecting piezoresistive effects, what is the value of poission’s ratio?**

** **The Neglecting piezoresistive effects, 0.5 are the value.

**32) What is rectification efficiency of a Bridge rectifier?**

The bridge rectifier is 81.2%.

**33) What is the wavelength of HF?**

It is the wavelength of HF 100m-10m.

**34) How to measure magnetic flux?**

The hall-effect pick-up can be measured by

**35) What is ripple factor of an ideal rectifier?**

The 0 ideal rectifiers.

**36) What is use of screw tuning into the waveguide?**

The waveguide may be capacitive or inductive depending upon the position inside the waveguide.

**37) If reflection coefficient for voltage be 0.6 the voltage standing wave ratio (VSWR)?**

The voltage standing wave ratio (VSWR) is 4.

**38) What is the vertical sync frequency?**

It is sync frequency 50Hz

**39) What is the wavelength of VHF?**

It is the 10m-1m wavelength of VHF

**40) If a superhetrodyne receiver is 450 KHz. If it is tuned to1200KHz, the image frequency will be?**

The 2100 KHz image frequency will be

**41) If the maximum and minimum voltages on a transmission line are 4Vand 2V**

**Respectively, for a typical load, VSWR?**

It is respectively, for a typical load, VSWR 2.0

**42) Which of the following type of lamp gives more illumination from low wattage?**

The type of lamp gives more illumination from low wattage LED lamp.

**43) If the colour code of a resistor is brown,black, brown, the value of resistor will be.**

The resistor is brown, black, brown, the value of resistor will be1K

**44) What is the function of conducting walls in a waveguide?**

The function of conducting walls in a waveguide is to confine energy within the waveguide.

**45) What is the colour code of a 3M3 ohm resistor?**

The orange, orange, black,yellow brown of a 3M3 ohm resistor is

**46) When there is no reflection in transmission line, VSWR will be?**

** **The VSWR will be S=1

**47) What is the colour code of a 0.5 ohm resistor?**

The colour code of a 0.5 ohm resistor is green, black, and silver

**48) Which types of solar cell transducer?**

It is a photovoltaic transducer

**49) What is the Nyquist rate of signal?**

The Nyquist rate of signal is 2fmax samples/sec

**50) What is the frequency range of UHF signals?**

The frequency range of UHF signals 300MHz to 3GHz

**51) Why loading is used in cables?**

The loading is used cables in order to reduce distortion and attenuation

**52) What is principle of klystron operation?**

A operates on the principle of velocity modulation.

**53) If the reflection coefficient is 1/5, what is the corresponding VSWR?**

It is the corresponding VSWR 3/2.