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A _________ door is provided with special Hinges known as the double action spring Hinges and thus the shutters of the door are held in a closed position when the door is not in use.

A _________ door is provided with special Hinges known as the double action spring Hinges and thus the shutters of the door are held in a closed position when the door is not in use. Correct Answer Swing

In case of Swing doors, when the door is to be used a slight push is made and then the action of spring brings the shutter in the open position. This type of door is widely used in passages of public building such as government offices, banks, etc.

Related Questions

The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. If the maximum number of valves that can be closed at the same time are closed which of the following must true?
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