In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around __________________?

Related Mcqs:

The longitudinal stress induced in a thin walled cylindrical vessel under internal pressure is_________________?

A. pd/2t B. pd/4t C. pd/t D. pd/8t...

In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed ______________ of the column diameter?

A. 1/5th B. 1/15th C. 1/30th D. 1/50th...

In a rotary drier, the average retention time of solid is (where Z = length of the drier, metres ρ = apparent solid density, kg/m3 L = flow rate of dry solids, kg/see. m2 drier crosssection H = hold up of solid.) ?

A. Z.H.ρ/L B. L/Z.H.ρ C. H.ρ/L D. Z.H/ρL...

“A claming section” before the liquid flows into the downcomer is provided to__________________?

A. Permit release of entrained vapour in the liquid B. Reduce the discharge fluctuation C. Ensure better vapour-liquid contact D. Cool the liquid before it flows down...

The diameter of a propeller agitator used in agitation tank ranges from ____________ percent of the tank diameter and its peripheral speed is normally 300 to 500 metres/minute ?

A. 5 to 10 B. 15 to 30 C. 40 to 50 D. 55 to 75...