In a threaded assembly, contact between male and female threads takes place at the

37) _____ is the standard voltage in India

110 volts at 60 cycles per second

120 volts at 60 cycles per second

220 volts at 50 cycles per second

220 volts at 40 cycles per second

Answer is:

220 volts at 50 cycles per second

Explanation:

38) Current is measured in

Answer is:

Ampere

Explanation:

The SI unit of electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit Electric current is measured using a device called an ammeter.

39) A fresh sewage become stale in

Answer is:

6 to 8 hours

Explanation:

40) _____ traps are used for receiving waste water from kitchen, sinks, baths and rain and surface water from house

Answer is:

Gully

Explanation:

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In a threaded assembly, contact between male and female threads takes place at the

Flanks

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Related ISRO Technician-B Plumber Question Paper - 2019 (Set - 1) with Answer Key

37) _____ is the standard voltage in India

220 volts at 50 cycles per second

38) Current is measured in

Ampere

39) A fresh sewage become stale in

6 to 8 hours

40) _____ traps are used for receiving waste water from kitchen, sinks, baths and rain and surface water from house

Gully

For More ISRO Technician-B Plumber Question Paper - 2019 (Set - 1) with Answer Key