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The proportion of a nut thickness with respect to bolt diameter (D) is same as the thickness of the nut

Snap head rivets are widely used in various industries like manufacturing and construction. Snap head rivets have applications where you need a permanent joint. It is a two piece rivet that can be used to join two or more materials of different thicknesses.

Bench vices, in particular, attach directly to a workbench to hold the workpiece during operations such as sawing, planing, and drilling. A bench vise itself consists of several components. The elements of the vise responsible for holding a workpiece are called jaws.

Dry densities of the following are :
Dense sand -2.07

Stiff clay – 2.00

A cofferdam is a reasonably watertight enclosure, usually temporary, built around a working area in the midst of water for the purpose of excluding water from that enclosed area during construction.
A bulkhead is an upright wall within the hull of a ship or within the fuselage of an aeroplane. Other kinds of partition elements within a ship are decks and deckheads.

A triangle has two of its sides are equal is an isosceles triangle therefore has both two equal sides and two equal angles . A triangle with all sides equal is called an equilateral triangle, and a triangle with no sides equal is called a scalene triangle.

If the object lies in third quadrant its position with respect to reference plane will be behind the vertical plane and below the horizontal plane

When the object is cut by a section , plane parallel to HP and perpendicular to VP . Then the section view of the object is obtained in plan

Insulation resistance can be measured using megger.

Ohm meter measures low resistances.

Multi meter is the commonly used measurement device capable of measuring a variety of quantities.

Clamp meter is an electrical test tool that combines a basic digital multi meter with a current sensor. They are more accurate than multi meters.

Ward Leonard system is used for speed control of DC motor.

It is a basic armature control method. This control system consists of DC motor-generator set and the main motor. The main motor is controlled by applying variable voltage across its armature. This variable voltage is obtained using the motor-generator. It was very widely used in the past.

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