| 1. | Which one of the following is used for making a branch right angle to the main line in pipe fitting ? | |
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union
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elbow
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tee
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flange
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Report Question| 2. | Which among the following is the cause for water flowing from tap even when firmly closed ? | |
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spindle bent
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valve on the spindle loose
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defective washer
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spindle threads worn-out
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