working principle of ballpoint pen?

Answer Posted / vijaygadu

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 ?    65 Yes 24 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

sir,i appllied junier engineer engineer in rrb chennai,i need syllabus for the topic of apptitude,reasonong,general english and mechanical engineering,and general studies.please sent my mail id aravindaptc@yahoo.co.in.

1671


Explain the types of elasticity?

630


Which is first stress or strain?

608


What are the causes of L.O. high temperature?

1354


What are the different parts of impulse reaction turbine?

1538






What is meant by gray body?

649


Explain why will an ice cube placed in a cup of hot rotating water spin automatically faster than the water itself?

559


What type of cross-section is usually of a chisel?

764


What is a radial-flow turbine?

696


CATIA:SPRING WITH SOME RADIUS AXIS

1885


How can you identify mild steel, cast iron, and high carbon steel?

827


What is the materials of cotter joints?

684


what is the difference between fire grate in a boiler and the burner? and is the fire grate is the furnace of the boiler?

1405


What are the basis on which the best material for sliding contact bearings manufacturing?

670


we use parallel flow heat exchanger to coo oil of 1000 EP viscosity,oftenly tubes may damage during cleaning etc what is proper way to clean cooler? How impurities decreased or vanished during working or in less teme job performed?

1439