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Question
working principle of ballpoint pen?
 Question Submitted By :: Gopi_180184
I also faced this Question!!     Rank Answer Posted By  
 
  Re: working principle of ballpoint pen?
Answer
# 1
HYDRODYNAMIC LUBRICATION

Pen is fitted with a tiny ball bearing in its tip. As the pen moves along the paper, the ball rotates picking up ink from the ink cartridge and leaving it on the paper.
 
Is This Answer Correct ?    33 Yes 10 No
Vijaygadu
 
  Re: working principle of ballpoint pen?
Answer
# 2
friction between pen and paper 
Is This Answer Correct ?    6 Yes 20 No
Navdeep
 
 
 
  Re: working principle of ballpoint pen?
Answer
# 3
it works on two principles
- frictional force between pen and paper.
- gravitaional force due to which ink flows in downward direction.
 
Is This Answer Correct ?    16 Yes 6 No
Atul Tripathi
 
  Re: working principle of ballpoint pen?
Answer
# 4
Ball is fixed in the tip of the pen. Ball is rotated by the
friction with paper.due to capillary action (the gap
between ball and ball holder is min) the ink flows between
ball and ball holder and it is printed on the paper.
 
Is This Answer Correct ?    5 Yes 3 No
Rajasekar
 
  Re: working principle of ballpoint pen?
Answer
# 5
ball pen functions on the principle of surface tension 
Is This Answer Correct ?    8 Yes 3 No
Suguna
 
  Re: working principle of ballpoint pen?
Answer
# 6
it works on the principle of gravitational force.due to
gravitational force ink flows downword direction.
 
Is This Answer Correct ?    6 Yes 0 No
Shivaji
 
  Re: working principle of ballpoint pen?
Answer
# 7
-gravitaional force due to which ink flows in downward
direction.
 
Is This Answer Correct ?    1 Yes 1 No
Thirupati
 

 
 
 
Other Mechanical Engineering Interview Questions
 
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How to reduce prodction assembly time ?   2
How to calculate per kW how much fuel conssume in DG set? L&T 3
Interview xperience at barc BARC 2
How to protect the pipe line from crrossion.? MAHINDRA 9
Is there any problem occur in steam turbine if generator works as a motor?   2
Why did you leave your last job? Ranbaxy 1
fd fan working   2
which case we find maximum pressure & flow in centrifugal pump - circular casing or volute casing?   1
why cenrifugal pump casing is called involute casing. GNFC 5
Purpose of governer in automobile?   14
what company need you   1
 
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