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What is insulation megger draw and explain with neat diagram?
Meggar is a hand driven tool for measuring insulation resistance and earth resistance.
Why is it appropriate to use the meter rule for measuring the length of a copper wire but the micrometer screwgauge for the diameter?
A meter rule is apropriate as it can measure up to unlimited meter while micrometer is suitable for diameter since it has a high degree of accuracy to small diameters in millimeters.
What is taper turning on lathe machine?
An operation performed on a lathe that feeds a tool at an angle to the length of the workpiece in order to create a conical shape.
Why potentiometer method is an accurate method for measuring potential difference?
Say 'emf' instead potential difference. Because while measuring the same no current is drawn and just balancing the potential across with the potential drop on the balancing length of the potentiometer wire. While balancing the galvanometer shows null deflection. So no current flows through the galvanometer. A perfect balance with the potential difference (EMF) of a cell with potential drop across that particular length.
What are the types of tool post?
the types of tool post on lathes can be classified as single screw tool post four bolt tool post open side tool post four way tool post
