Description : Which is the most efficient and best for measuring very small flow rate of gases? (A) Venturimeter (B) Orificemeter (C) Rotameter (D) Flow nozzle
Last Answer : (C) Rotameter
Description : For a given fluid flow rate, which of the following incurs maximum head loss? (A) Orificemeter (B) Venturimeter (C) Flow nozzle (D) All of them incur the same head loss
Last Answer : (A) Orificemeter
Description : Which of the following flow measuring devices is an area meter? (A) Venturimeter (B) Orificemeter (C) Anemometer (D) Rotameter
Last Answer : (D) Rotameter
Description : Select the wrong statement pertaining to flow of an incompressible fluid through a Venturimeter. (A) For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal ... than an orificemeter (D) Venturimeter incurs less power loss compared to an equivalent orificemeter
Last Answer : (C) Venturimeter occupies less space than an orificemeter
Description : In a/an __________, the flow rate of fluids is obtained by measuring the difference between the impact and the static pressure. (A) Rotameter (B) Pitot tube (C) Venturimeter (D) Flow nozzle
Last Answer : (B) Pitot tube
Description : The pressure head of a flow meter remains constant for (A) Venturimeter (B) Orificemeter (C) Rotameter (D) Pitot tube
Description : For the same flow rate of a fluid, the pressure drop is the least for (A) Venturimeter (B) Orificemeter (C) Flow-nozzle (D) Δp is same for all
Last Answer : (A) Venturimeter
Description : Flow measurement in an open channel is done by a/an (A) Venturimeter (B) Orificemeter (C) Weir (D) Rotameter
Last Answer : (C) Weir
Description : Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an (A) Pitot tube (B) Venturimeter (C) Orificemeter (D) Rotameter
Last Answer : (A) Pitot tube
Description : Which of the following can be used for the direct measurement of volumetric flow rate of slurry? (A) Venturimeter (B) Orificemeter (C) Rotameter (D) Pitot tube
Description : . It is possible to integrate an automatic flow controller to a (A) Flow nozzle (B) Venturimeter (C) Rotameter (D) None of these
Description : __________ is used for measuring the static pressure exerted on the wall by a fluid flowing parallel to the wall in a pipeline. (A) Venturimeter (B) Pressure gauge (C) Pitot tube (D) Orificemeter
Last Answer : (C) Pitot tube
Description : Sele(A) The discharge through a Venturimeter depends upon Δp only and isindependent of orientation of the meterct the correct statement. (B) A Venturimeter with a given gage difference discharges at a ... a given pipe line, whether a Venturimeter or a nozzle with the same throat dia is used
Last Answer : (A) The discharge through a Venturimeter depends upon Δp only and isindependent of orientation of the meterct the correct statement
Description : Select the correct statement. (A) The discharge through a Venturimeter depends upon Δp only and isindependent of orientation of the meter (B) A Venturimeter with a given gage difference discharges at a ... a given pipe line, whether a Venturimeter or a nozzle with the same throat dia is used
Last Answer : (A) The discharge through a Venturimeter depends upon Δp only and isindependent of orientation of the meter
Description : The energy loss in flow through Venturimeter is less than that through flow nozzle, because in case of a flow nozzle, the (A) Length is shorter (B) Throat diameter is more (C) Sudden expansion of flow in the downstream occurs (D) Distance between the throat and the inlet is more
Last Answer : (C) Sudden expansion of flow in the downstream occurs
Description : Which of the following is used for very accurate measurement of flow of gas at low velocity? (A) Pitot tube (B) Rotameter (C) Segmental orificemeter (D) Hot wire anemometer
Last Answer : (D) Hot wire anemometer
Description : Which of the following instrument can be used for measuring speed of an aeroplane? (A) Venturimeter (B) Orifice plate (C) Pitot tube (D) Rotameter
Last Answer : Answer: Option C
Description : Power loss in an orificemeter is __________ that in a Venturimeter. (A) Less than (B) Same as (C) More than (D) Data insufficient, cannot be predicted
Last Answer : (C) More than
Description : Venturimeter and orificemeter measures the __________ of the fluid. (A) Pressure (B) Maximum velocity (C) Average velocity (D) Point velocity
Last Answer : (C) Average velocity
Description : The most serious disadvantage of an orificemeter is that (A) It is not very accurate (B) It is very costly (C) Most of the pressure drop is not recoverable (D) It is not suitable for measuring gas flow
Last Answer : (C) Most of the pressure drop is not recoverable
Description : Flow of water in a pipe about 3 metres in diameter can be measured by (A) Orifice plate (B) Venturimeter (C) Rotameter (D) Pitot tube
Last Answer : Answer: Option D
Description : Bernoulli’s equation does not apply to the functioning of a/an (A) Venturimeter (B) Orificemeter (C) pitot tube (D) None of these
Last Answer : (D) None of these
Description : Which of the following instruments is used to measure flow on the application of Bernoulli's theorem? (A) Venturimeter (B) Orifice plate (C) Nozzle (D) All of the above
Description : A packed tower compared to a plate tower for a particular mass transfer operation (A) Incurs smaller pressure drop (B) Allows installation of cooling coils (C) Is less costly when built in large sizes/diameters (D) Is more suitable, if suspended solids are present in fluid stream
Last Answer : (A) Incurs smaller pressure drop
Description : Which is not a variable head meter? (A) Venturimeter (B) Pitot tube (C) Rotameter (D) None of these
Description : Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty? (A) Grid tray tower (B) Perforated tray tower (C) Wetted wall tower (D) Bubble cap tower
Last Answer : (D) Bubble cap tower
Description : The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a (A) Weir (B) Pitot tube (C) Kennison nozzle (D) V-notch
Description : A Venturimeter cannot be used for the direct measurement of (A) Datum difference in the stretch of pipe-flow (B) Pressure difference in the flow through pipeline (C) Friction loss in pipe flow (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Permanent pressure loss in a well designed Venturimeter is about __________ percent of the venturi differential. (A) 1 (B) 10 (C) 30 (D) 50
Last Answer : (A) 1
Description : For measuring flow by a Venturimeter, if should be installed in (A) Vertical line (B) Horizontal line (C) Inclined line with flow downward (D) In any direction and in any location
Description : With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss (A) Decreases (B) Increases (C) Remain constant (D) Increases linearly
Last Answer : (C) Remain constant
Description : A sells an article to B making a profit of 1/5 th his outlay. B sells it to C, gaining 20%. If C sells it for Rs 600 and incurs a loss of 1/6 th his outlay, the cost price of A is: 1. Rs 600 2. Rs 500 3. Rs 720 4. Rs 800
Last Answer : 1. Rs 600
Description : A Rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used and Rotameter shows the same reading, the flow rate (cc/sec) is (A) 26 (B) 42 (C) 269 (D) 325
Last Answer : (C) 269
Description : In area meter (e.g., Rotameter), with increase in the fluid flow rate, the (A) Pressure drop increases linearly (B) Pressure drop is almost constant (C) Area through which fluid flows does not vary (D) None of these
Last Answer : (B) Pressure drop is almost constant
Description : Pick out the correct statement pertaining to Venturimeter. (A) A Venturimeter with a fixed pressure drop discharges more, when the flow is vertically downward, than when the flow is vertically upward (B ... , when compressibility is taken into account, than when it is neglected (D) None of these
Description : Permanent loss in a Venturimeter is about __________ percent of the pressure drop in the upstream cone. (A) 1 (B) 10 (C) 40 (D) 70
Last Answer : (B) 10
Description : Rotameter is a device used to measure (A) Absolute pressure (B) Velocity of fluid (C) Flow (D) Rotation
Description : A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then ... new manometer reading will be __________ cms. (A) 17 (B) 42 (C) 84 (D) 1.8
Last Answer : __________ cms. (A) 17
Description : Vena-contracta formed during flow of a liquid through an orificemeter has (A) Minimum liquid cross-section (B) More diameter compared to orifice diameter (C) Minimum velocity of fluid stream (D) None of these
Last Answer : (A) Minimum liquid cross-section
Description : Which of the following instrument can be used for measuring speed of a submarine moving in deep sea? (A) Venturimeter (B) Orifice plate (C) Hot wire anemometer (D) Pitot tube
Description : With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the (A) Velocity increases (B) Pressure decreases (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : Pick out the wrong statement. (A) A slight haze at the top of chimney indicates good combustion in the furnace (B) A bag filter incurs very small pressure drop and is very efficient for ... dust collection equipment for removal of submicronic dust particles present in flue gas (D) None of these
Last Answer : (B) A bag filter incurs very small pressure drop and is very efficient for removal of submicronic dust particles from flue gases at very high temperature
Description : A person, by selling an article at half of the list price incurs a loss of 20%. Find the profit percentage if he sells at the list price? A. 25% B. 60% C. 5% D. 30 %
Last Answer : Answer – B (60 %) Explanation – 0.50 MP = 0.8 CP (since 20% loss) So, MP = 160CP ⇒ 60% gain.
Description : Deepak selling a product at 48% discount, he incurs a loss of 10%. The marked price of the product is 15000 Rs. At what percent discount he should sell the product so as to have a profit of 30%.
Last Answer : Mp=15000==>Sp= 15000*0.52= 7800. Loss of 10% is there==>Cp= 7800/ 0.90= RS.8666.66 Profit of 30% = 6000*1.15=11266.66 Discount should be Rs2600 Discount % should be {2600/15000}*100 =17.3%
Description : By selling a mobile at 52% discount, a seller incurs a loss of 8%. The marked price of the product is 18000 Rs. At what percent discount the seller should sell the mobile so as to have a profit of 33%.
Last Answer : Since, Marked Price = 18000 Therefore, Selling Price = 18000*0.48 = 8640 Loss of 8% is there Therefore, Cost price = 8640/0.92 = 9391.30Rs To have profit of 33% The Selling Price should be = 9391. ... should be 18000 - 12490.42 = 5509.58Rs Discount% should be [5509.58/18000]*100 = 30.60 ≈ 31%.
Description : Which of these columns incurs the lowest pressure drop? (A) Packed column (with stacked packing) (B) Packed column (with dumped packing) (C) Bubble plate column (D) Pulse column
Last Answer : (A) Packed column (with stacked packing)
Description : Open channel liquid flow is most conveniently measured by a (A) Hot wire anemometer (B) Notch (C) Rotameter (D) Segmental orifice
Last Answer : (B) Notch
Description : Which of the following may be termed as a variable orifice flow-meter? (A) Rotameter (B) Pitot tube (C) V-notch (D) All (A), (B) and (C)
Last Answer : (A) Rotameter
Description : Flow rate of high velocity flue gas discharged through a stack to the atmosphere can be most conveniently measured by a (A) Pitot tube (B) Manometer (C) Rotameter (D) None of these
Description : Drag force on the float of a Rotameter is (where Q = flow rate of the) (A) ∝ Q (B) ∝ √Q (C) ∝ Q2 (D) Constant
Last Answer : (D) Constant