HPCL Operations Technician Paper on Fluid Mechanics

If you are appearing Hindustan Petroleum Corporation Limited Visakh Refinery Operations Technician Recruitment exam 2020 and searching HPCL Operation Technician Previous Year Paper/ Model Paper/ Sample Paper then you are at right place. Here, we are publishing technician question paper for your practice.

The density of a liquid having a volume of 6 cubic meter and weight of 44 kN is
(a) 7.33 kg/cubic meter
(b) 747.5 kg/cubic meter
(c) 264 kg/ cubic meter
(d) 7333.3 kg/cubic meter

The pressure measured above the absolute zero of pressure is termed as
(a) atmospheric pressure
(b) gauge pressure
(c) absolute pressure
(d) vacuum pressure

The viscosity of liquids _________with increase in temperature
(a) decrease
(b) increases
(c) first decreases and then increases
(d) first increases and then decreases

Which of the following part is NOT related with centrifugal pump ?
(a) Foot valve
(b) Suction pipe
(c) Delivery pipe
(d) Draft tube

Pelton wheel turbine is an example of
(a) inward flow reaction turbine
(b) outward flow reaction turbine
(c) mixed flow reaction turbine
(d) impulse turbine

The flow in pipe is laminar, if Reynold number is
(a) less than 2000
(b) equal to 4000
(c) greater than 2000
(d) greater than 4000

The delivery valve, while starting centrifugal pump, is kept
(a) fully closed
(b) fully opened
(c) half opend
(d) in any position

Continuity equation is based on the law of conservation of
(a) mass
(b) energy
(c) momentum
(d) None of these

Darcy-Weibach equation is used to find the loss of head due to ______in the pipes
(a) Suddeden enlargement
(b) Sudden contraction
(c) Friction
(d) None of these

Lock gates are provided to
(a) Change the water level in a canal or river for navigation
(b) store water for irrigation purpose
(c) either of the above
(d) None fo these

An impulse turbine requires
(a) high head and small quantity of water flow
(b) low head and small quanitty of water flow
(c) low head and high rate of water flow
(d) None of these

Air vessels are used in
(a) centrifugal pump
(b) submersible pump
(c) reciprocating pump
(d) turbine