ALLInterview.com :: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Google
   
 
Categories >> Engineering >> Electronics Communications
 
 


 

 
 Civil Engineering interview questions  Civil Engineering Interview Questions (3072)
 Mechanical Engineering interview questions  Mechanical Engineering Interview Questions (3287)
 Electrical Engineering interview questions  Electrical Engineering Interview Questions (13323)
 Electronics Communications interview questions  Electronics Communications Interview Questions (2362)
 Chemical Engineering interview questions  Chemical Engineering Interview Questions (416)
 Aeronautical Engineering interview questions  Aeronautical Engineering Interview Questions (77)
 Bio Engineering interview questions  Bio Engineering Interview Questions (17)
 Metallurgy interview questions  Metallurgy Interview Questions (79)
 Industrial Engineering interview questions  Industrial Engineering Interview Questions (163)
 Instrumentation interview questions  Instrumentation Interview Questions (2375)
 Automobile Engineering interview questions  Automobile Engineering Interview Questions (106)
 Mechatronics Engineering interview questions  Mechatronics Engineering Interview Questions (38)
 Marine Engineering interview questions  Marine Engineering Interview Questions (43)
 Power Plant Engineering interview questions  Power Plant Engineering Interview Questions (75)
 Engineering AllOther interview questions  Engineering AllOther Interview Questions (1195)
Question
why is 555 timer called so?
 Question Submitted By :: Electronics-Communications
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
inside the 555 timer, there are 3 resistors used in series to get vcc/3 and 2*vcc/3 ....
all the 3 resistors used are same and are 5k ohm resistors..
so its called 555 timer..
acknowledgement guys ... am kinda sure though, but plz verify it ...

--RO--
 
Is This Answer Correct ?    178 Yes 14 No
Ro
 
Answer
# 2
The 555 timer IC was first introduced around 1971 The 555
gets its name from the three 5-kOhm resistors used in
typical early
 
Is This Answer Correct ?    74 Yes 9 No
Ajay Kumar Yadav
 
 
 
Answer
# 3
Becoz in that circuit 3 Resisters are used of Same value of 5k ohm in series. 
Is This Answer Correct ?    66 Yes 8 No
Khan Mohd Altaf
 
Answer
# 4
as i thought 555 timer is called so because of the fact that it consist three 5Kohm resistor in series and with the help of these resistors there is a delay of time and also other fact which make it timer is that timing of the pulses can be controlled through this.It basically works as a clock timer.............................
I hope its the perfect answer..............
 
Is This Answer Correct ?    21 Yes 1 No
Sudha Kumari
 
Answer
# 5
IC 555 is named as timer, it is one of the most useful ic
in electronic circuit. It consist of 3 resisters having the
capacity of 5kohm each, and with the help of these
resisters it can create a time delay, so it is called timer.
 
Is This Answer Correct ?    21 Yes 5 No
Sanjeev Kumar
 
Answer
# 6
dekho baat zara aise hai ki 555timer mein hot to kachu nai
hai mano 3resistor se hot hain . aur be apne matlab ki
series mein jude rehat hain .aur 1 aur baat zara ja hai ki
be jo resistor hain kaho to unki aukat 5kohms ki hot hai
jaa ke mare bahein 555 timer kehat hain



kai answer keso lago dekho bhai lage kaiso bhi mano sahi hai
 
Is This Answer Correct ?    36 Yes 26 No
Devendra Patel
 
Answer
# 7
The 555 timer is an integrated circuit (chip) implementing
a variety of timer and multivibrator applications.The 555
gets its name from the three 5-KΩ resistors used in typical
early implementations.
 
Is This Answer Correct ?    10 Yes 4 No
Ajay
 
Answer
# 8
The 555 produces pulses. These may be a single pulse, in
monostable mode, or a series of pulses in astable mode.

The duration of the pulses, and the interval between them
in astable mode, can be controlled as desired.

In other words, the timing of the pulses can be
controlled.
 
Is This Answer Correct ?    8 Yes 3 No
Syncopator
 
Answer
# 9
Because in ic 555 there are
three resistor in 5ohms
connected in series
 
Is This Answer Correct ?    2 Yes 0 No
Gaurav
 
Answer
# 10
It contain Bipolar Transistor,Voltage Divider Circuit,Flip-Flop ,and Two Compators as a five componts so called IC 555 
Is This Answer Correct ?    0 Yes 1 No
Anil Deshmukh
 

 
 
 
Other Electronics Communications Interview Questions
 
  Question Asked @ Answers
 
Why do we use Multiple Access Schemes? What is the difference between FDMA, TDMA and CDMA?   1
quantizer means Assurgent 8
What is D-FF? What is the basic difference between Latches and Flip flops? What is a multiplexer? How can you convert an SR Flip-flop to a JK Flip-flop? How can you convert an JK Flip-flop to a D Flip-flop? What is Race-around problem? How can you rectify it? Which semiconductor device is used as a voltage regulator and why? Explain an ideal voltage source? Explain zener breakdown and avalanche breakdown? What are the different types of filters? What is the need of filtering ideal response of filters and actual response of filters? What is sampling theorem? What is impulse response? Explain the advantages and disadvantages of FIR filters compared to IIR counterparts. What is CMRR? Explain half-duplex and full-duplex communication? Which range of signals is used for terrestrial transmission? Why is there need for modulation? Which type of modulation is used in TV transmission? Why we use vestigial side band (VSB-C3F) transmission for picture? When transmitting digital signals is it necessary to transmit some harmonics in addition to fundamental frequency? For asynchronous transmission, is it necessary to supply some synchronizing pulses additionally or to supply or to supply start and stop bit? BPFSK is more efficient than BFSK in presence of noise. Why? What is meant by pre-emphasis and de-emphasis? Explain 3 dB cutoff frequency? Why is it 3 dB, not 1 dB? Explain ASCII, EBCDIC? DRDO 3
What is Authentication? Why do we need it? Name the algorithm(s) used in it?   1
what is 802.11b Alcatel 5
if a crow sit on on current wire it will not fell current but a man touch it he get shock . why/ HCL 4
What is the difference between ASICs and FPGA devices? Which one is better? Which is being currently in use?   4
Where are multimode fibers practically used?   1
what is ripple rejection? TCS 1
waht is gain of antenna Bosch 3
why we are using input resistance in op-amp. indicate the role of it.   1
Why capacitor pass A.C and Block D.C ? Honeywell 3
 
For more Electronics Communications Interview Questions Click Here 
 
 
 
 
 


   
Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
   
Copyright 2013  ALLInterview.com.  All Rights Reserved.

ALLInterview.com   ::  KalAajKal.com