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ISRO Technician-B Plumber 2019
59

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

59) The mass of 1 cubic meter of cement concrete is

1000 kg

2000 kg

2500 kg

3000 kg

Answer is:

2500 kg

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

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

60) Water hammer is caused in pipe lines when

Water flows under high pressure

Valves and taps are closed suddenly

Valves and taps are opened suddenly

None of the above

Answer is:

Valves and taps are closed suddenly

Explanation:

Water hammer is caused in pipe lines when valves and taps are closed suddenly.

Water hammer is caused in pipe lines when

61) The best system of artificial ventilation is

Ceiling fans

Air coolers

Air conditioning

Propeller type fans

Answer is:

Air conditioning

62) Temporary hardness can be removed by

Base Exchange process

Filtration

Screening

Boiling

Answer is:

Boiling

63) If V is the velocity of flow through a pipe and A is the area of cross section, the rate of flow, Q is calculated using the formula

Q=V*A

Q=V/A

Q=V+A

Q=V-A

Answer is:

Q=V*A

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

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