61. For an orfice plate having ratio of inside and pipe diameter as 0.5, the pressure loss in comparison to differential pressure created is of the order of :
(a) 5%
(b) 10%
(c) 20%
(d) 35%
(e) 50%.
Ans: e
62. 15° taper venturi tube causes loss of following % of the differential pressure :
(a) 5%
(b) 10%
(c) 20%
(d) 30%
(e) 40%.
Ans: b
63. Pick out false statement about advantages of orifice plates, used for flow measurement :
(a) no moving parts
(b) long-term reliability
(c) highturn-down ratio
(d) inexpensive
(e) inherently simple in operation.
Ans: c
64. Pick out false statement about disadvantages of orifice plates :
(a) square root relationship
(b) poor turn-down ratio
(c) critical installation requirements
(d) short-term reliability
(e) high irrecoverable pressure loss.
Ans: d
65. Dall tube is another variation of :
(a) orifice plate
(b) nozzle
(c) venturi tube
(d) rotameter
(e) pitot-tube.
Ans: c
66. Target meter is concerned with measure-ment of:
(a) flow
(b) pressure
(c) viscosity
(d) density
(e) level.
Ans: a
67. The flow error in case of normal nozzles is of the order of :
(a) 0.1%
(b) 0.2%
(c) 0.5%
(d) 1%
(e) 2%.
Ans: d
68. Which of the following flow meter maintains a constant pressure differential but varies the orifice area with flow :
(a) Ledoux bell
(b) variable area
(c) straightening vane
(d) variable head
(e) vane-type.
Ans: b
69. Flow in open channels is measured by using :
(a) nozzle
(b) orifice plate
(c) propeller
(d) weir
(e) vortex-shedding meter.
Ans: d
70. For measuring air flow, following meter is often used :
(a) vane-type or anemometer
(b) electro magnetic flow meter
(c) vortex-shedding meter
(d) ultrasonic flow meter
(e) pitot tube.
Ans: a
Read More Questions:
Process Instrumentation and Control - Mechanical Engineering MCQs Part1
Process Instrumentation and Control - Mechanical Engineering MCQs Part2
(a) 5%
(b) 10%
(c) 20%
(d) 35%
(e) 50%.
Ans: e
62. 15° taper venturi tube causes loss of following % of the differential pressure :
(a) 5%
(b) 10%
(c) 20%
(d) 30%
(e) 40%.
Ans: b
63. Pick out false statement about advantages of orifice plates, used for flow measurement :
(a) no moving parts
(b) long-term reliability
(c) highturn-down ratio
(d) inexpensive
(e) inherently simple in operation.
Ans: c
64. Pick out false statement about disadvantages of orifice plates :
(a) square root relationship
(b) poor turn-down ratio
(c) critical installation requirements
(d) short-term reliability
(e) high irrecoverable pressure loss.
Ans: d
65. Dall tube is another variation of :
(a) orifice plate
(b) nozzle
(c) venturi tube
(d) rotameter
(e) pitot-tube.
Ans: c
66. Target meter is concerned with measure-ment of:
(a) flow
(b) pressure
(c) viscosity
(d) density
(e) level.
Ans: a
67. The flow error in case of normal nozzles is of the order of :
(a) 0.1%
(b) 0.2%
(c) 0.5%
(d) 1%
(e) 2%.
Ans: d
68. Which of the following flow meter maintains a constant pressure differential but varies the orifice area with flow :
(a) Ledoux bell
(b) variable area
(c) straightening vane
(d) variable head
(e) vane-type.
Ans: b
69. Flow in open channels is measured by using :
(a) nozzle
(b) orifice plate
(c) propeller
(d) weir
(e) vortex-shedding meter.
Ans: d
70. For measuring air flow, following meter is often used :
(a) vane-type or anemometer
(b) electro magnetic flow meter
(c) vortex-shedding meter
(d) ultrasonic flow meter
(e) pitot tube.
Ans: a
Read More Questions:
Process Instrumentation and Control - Mechanical Engineering MCQs Part1
Process Instrumentation and Control - Mechanical Engineering MCQs Part2
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