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 >> Aptitude Questions >> General Aptitude
 
 


 

 
 English interview questions  English Interview Questions (463)
 General Aptitude interview questions  General Aptitude Interview Questions (1894)
 Puzzles interview questions  Puzzles Interview Questions (460)
Question
WHAT HAPPENS WHEN SQUARE PULSE IS GIVEN TO THE INPUT OF THE 
TRANSFORMER
 Question Submitted By :: General-Aptitude
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
IN SOME CASES THE TRANSFORMER IS DESIGNED TO APPLY DC
PULSE( NOT CONTINUOUS DC SIGNAL ) TO ITS PRIMARY WINDING
AND THE TRANSFORMER IS CALLED AS "PULSE TRANSFORMER".
IF DC VOLTAGE IS GIVEN TO WDG; AS WDS IS AS GOOD AS
INDUCTOR HENCE CURRENT I=(1/L)*INTEGRAL(Vdc)dt, WHICH WILL
CONTINUOUSLY INCREASE THE CURRENT FLOWING THROUGH THE
WINDING. HENCE THE WIDTH OF THE PULSE SHOULD BE SMALL
OTHERWISE THE TRANSFORMER WINDING WILL BURN.
IN THE PULSE TRANSFORMERS THE RESISTANCE OF THE WINDING
SHOULD BE KEPT MINIMUM TO LINIT THE I^2*R LOSSES AND LIMIT
THE TEMP OF THE WINDING BEFORE INSULATION FAILURE.
 
Is This Answer Correct ?    7 Yes 1 No
Sanket Patil
 
Answer
# 2
It is also a A.C SIGNAL so output goes to a square pulse 
Is This Answer Correct ?    15 Yes 10 No
Lokesh
 
 
 
Answer
# 3
if the freequency is high we will get same square wave with
modified magnitude but if the freqcency is low impulse will
appiare
 
Is This Answer Correct ?    10 Yes 6 No
Sateesh
 
Answer
# 4
what will be width of pulse and min voltage needed for
transformation.
 
Is This Answer Correct ?    3 Yes 1 No
Ashok
 
Answer
# 5
Induced voltage=4.44*f*N*A*B = 4*form factor*f*N*A*B
f=freq
N=no of primary turns
A=area of wdg
B=max flux density

For sinusoidal input, form factor= 1.1 , its a peaky wave
form

But for square ac input signal, form factor is less than
1.1. (as its non peaky)

So other factors remaining same, induced voltage decreases
for square input ac signal.
 
Is This Answer Correct ?    3 Yes 1 No
Sirin Dutta Chowdhury
 
Answer
# 6
CAN ANYBODY ANSWER THIS QUESTION ... 
Is This Answer Correct ?    6 Yes 5 No
Sridharan
 
Answer
# 7
In Transformer secondary the emf induced depends on the
rate of change of flux,If square pulse or pulsating DC is
given thn output will be triangular wave(due to inductnce
of secondary)
 
Is This Answer Correct ?    6 Yes 5 No
Prashant Singh
 
Answer
# 8
It depends on the width of pulse,otherwise transformer will
go in saturation.also at secondary the pulse will not be
simple pulse but it will be rather impulse.
 
Is This Answer Correct ?    1 Yes 0 No
Ashok Jain
 
Answer
# 9
Depends on the type of the input given, wheather current or
voltage .
If its a current waveform then considering the changes in
emf on the primary side to the induced emf on the sec side,
it will go phase changes to result the output in the form
of ramp & slope resulting in the triangular waveform.
Considering the voltage waveform we receive output in the
form of impulse waves or square waves with reduced widths.
 
Is This Answer Correct ?    1 Yes 0 No
Kuldip
 
Answer
# 10
if it is current input than answer is triangular voltage

if input is voltage than output is pulse but may not be a
square but out of phase
 
Is This Answer Correct ?    1 Yes 1 No
Anil
 

 
 
 
Other General Aptitude Interview Questions
 
  Question Asked @ Answers
 
if the height of the triangle decreases by 40% and the breadth increases by 40%.then the effect on the area is TCS 1
What should come in place of the question mark (?) in the following letter AC FH KM PR ? (a) VW (b) UX (c) UW (d) TV (e) None of these   11
A 4 digit no may consist of the digits 6,2,7,5 where none of the nos are repeated.Find the possible no of combinations divisible by 36? CTS 8
If the diagonals of a rhombus are 8 cm and 10 cm respectively what will be the area of the rhombus? (a) 35 sq cm (b) 40 sq cm (c) 30 sq cm (d) 20 sq cm (e) None of these   2
) Six friends decide to share a big cake. Since all of them like the cake, they begin quarreling who gets to first cut and have a piece of the cake. One friend suggests that they have a blindfold friend choose from well shuffled set of cards numbered one to six. You check and find that this method works as it should simulating a fair throw of a die. You check by performing multiple simultaneous trials of picking the cards blindfold and throwing a die. You note that the number shown by the method of picking up a card and throwing a real world die, sums to a number between 2 and 12. Which total would be likely to appear more often 8,9 or 10? TCS 1
When the mechanical number is one, voltage is called RRB 2
when 20% of a number is added to another number the number increases by 50%.what is the ratio of the first number to the second? CTS 13
to travel 'm' miles the time is 'h' hours,then what is the time taken to travel M miles. Wipro 7
A software engineer has the capability of thinking 100 lines of code in five minutes and can type 100 lines of code in 10 minutes. He takes a break for five minutes after every ten minutes. How many lines of codes will he complete typing after an hour? TCS 15
Information about projects iniliated by the govt?   1
Abhays age after three years will be three-seventh of his fathers age . ten years ago ,the ratio of their ages was 1:5 . what is Abhays fathers age at present ?(*** plz give explanation also***) IBM 2
The LCM of two numbers is 24. The GCF is 4. One number is 4 more than the other. What are the numbers.   6
 
For more General Aptitude 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