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TOPIC: Basic Electrical and Electronics Engineering (BEE)

Basic Electrical and Electronics Engineering (BEE) 2 years 6 months ago #1

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All Basic Electrical and Electronics Engineering (BEE) viva questions to be posted here
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Re: Basic Electrical and Electronics Engineering (BEE) 2 years 6 months ago #2

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tell the resistance using colour code.also tell about the tolerance band(last band).
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Re: Basic Electrical and Electronics Engineering (BEE) 2 years 6 months ago #3

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what is the frequency of ac in india. (ans:50 Hz)
how much is it in US. i said 60 Hz.
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Re: Basic Electrical and Electronics Engineering (BEE) 2 years 6 months ago #4

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my friend was asked that is it possible to work on transformer with same no. of turns on both sides.
ANS: yes. in such case voltage in primary & secondary winding will be same.
such transformer is used for isolation of 2 parts of a circiut electrically, so there is no chance of short circuit.
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Re: Basic Electrical and Electronics Engineering (BEE) 2 years 6 months ago #5

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1. what are the types of transformers? classify them construction-wise...
2. what is the voltage range of the regular ac supply v receive at home?
3. what is ripple factor? how will u eliminate d ac component??????
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Re: Basic Electrical and Electronics Engineering (BEE) 2 years 6 months ago #6

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-what are the types of resistors?
-what are the types of transistors?
-definition of current, power, voltage, energy?
-where is p-n-p transistor used and where is n-p-n transistor used?
-can rectifiers work on AC or DC or both?
-what are the types of motors?
-why we have 240V, 50hz in india and 220V, 60hz in US?
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Re: Basic Electrical and Electronics Engineering (BEE) 2 years 6 months ago #7

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-what is mesh, what is loop
-If we have full wave rectifier, then why do we use Bridge rectifier.
-Trace the path of current in bridge rectifier.
-What is the material used in LED. Symbol of LED.
-What is a resistor?
-What are types of network?
-In polyphase, Star & Delta, why we use AC supply and not DC.
-Define a Diode.
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Re: Basic Electrical and Electronics Engineering (BEE) 2 years 6 months ago #8

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-What is Line and Phase Voltage?
-Diode passes AC/DC ?
-How to measure 20Vp-p on a CRO?
-What is an open circuit transformer?
-Explain the colour coding of resistors.
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Re: Basic Electrical and Electronics Engineering (BEE) 2 years 6 months ago #9

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-How to identify cathode and anode of a diode, if the silver band is absent?
-What is charge?
-What are the various types of Diodes and transistors?
-At what voltage does a Computer work?
-Diodes work on what AC or DC?
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Re: Basic Electrical and Electronics Engineering (BEE) 2 years 6 months ago #10

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Can diodes work on dc too?-yes
What voltage is supplied to household appliances in india?-220v,50hz
If you are given 2 leds in series,then how will the resultant intensity of light be affected ?
-First it will increase the resistance as it is connected in series,therefore the current will decrease and
intensity depends on current,thuse less current so less intensity.
and what happens in parellel ?-The intensity will remain same,as same voltage across each led
is equal and res. also the same so same current flows.
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