What is meant by hazard rate?

1.	What is meant by hazard rate?
A.	Number of failures per unit time per number of items when exposed for same time
B.	Probability of test specimen fails between time t
C.	Both a. and b.
D.	None of the above
Answer» D. None of the above

Discussion

No Comment Found

Related MCQs

Single cylinder four stroke engine has brake power of 8 kW and brake mean effective pressure of 0.55 Mpa. What is the length of cylinder which is 1.2 times of bore diameter? (n = 3000 rpm)
The ratio of d / tfor thick cylinder is__________(whered = inner diameter, t = wall thickness)
A cylinder made of plain carbon steel has inner diameter 100 mm. What is the thickness of cylinder if maximum internal pressure of 20 Mpa acts on it? ( = 100 N/mm & poisson's ratio = 0.3)
Which type of formed threads are used for vertical pressure vessels in the pressure range of 0.1 N/mm to 1.5 N/mm?
A piston has allowable tensile stress of 50 N/mm and has bore diameter 150 mm. Considering strength of piston, what will be the thickness of piston head if maximum pressure of 10 N/mm acts on it?
A piston made of gray cast iron has piston head thickness of 20 mm. What will be thickness of piston barrel under piston rings if it has allowable tensile stress of 30 N/mm? ( Bore diameter = 50 mm & P =15 N/mm)
Failure rate for safety valve working for 400 hours is 3 x 10 failures/hour. What is the reliability of safety valve?
A cylindrical pressure vessel is subjected to an internal pressure of 3 Mpa on internal diameter of 1000 mm. The vessel is fabricated with single weld butt joint with back strip and is not radio-graphed. What is the thickness of flat head, if head made of alloy steel has an ultimate tensile strength of 400 N/mm ? (corrosion allowance = 2)
A cylindrical pressure vessel is subjected to operating pressure of 0.55 Mpa and corrosion allowance of 2. What is the thickness of pressure vessel shell if its internal diameter is 2000 mm? ( = 120 N/mm & = 0.75)
The limit equation s = S / Nis expressed as _________

What is meant by hazard rate?

Discussion

No Comment Found

Related MCQs

Reply to Comment