1.To obtain the dryness fraction of steam from a throttling calorimeter, the steam after throttling calorimeter should be:

Dry and saturated

Superheated

Completely condensed

Wet

2.In throttling process a. H12 = H2 b. H1 = H2 c. H1 = H2 + Hfg d.:

H12 = H2

H1 = H2 + Hfg

H1 = H2

H1 = H2 - Hfg

3.Throttling calorimeter is used to measure the dryness fraction up to

0.98

0.7

1.0

Anything

 

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