Test: Pressure & Its Measurements, Reciprocating Pumps, Flow Around Submerged Bodies - Drag & Lift - 2 - Mechanical Engineering MCQ

When can a piezometer be not used for pressure measurement inpipes?

Which of following are the beneficial effects of air vessel fitted to delivery side of a reciprocating pump?  
1. Constant rate of discharge can be ensured
2. Power consumption can be reduced
3. Discharge can be increased
4. Constant velocity of the piston can be ensured
Select the correct answer using the codes given below:
Codes:

Why is an air vessel used in a reciprocating pump? 

Consider the following pumps:  
1. Centrifugal pump, single-stage
2. Centrifugal pump, multi-stage
3. Reciprocating pump
4. Jet pump.
The pump (s) which can be used to lift water through a suction head of12 m from a well would include

Which one of the following is correct? A turbine pump is basically a centrifugal pump equipped additionally with

The drag force exerted by a fluid on a body immersed in the fluid is due to:  

When ever a plate is submerged at an angle with the direction of flow of liquid, it is subjected to some pressure. What is the component of this pressure in the direction of flow of liquid, known as?  

Which one of the following is correct? 
In the flow past bluff bodies

Match List-I with List-II and select the correct answer using the codes given below the lists: 

The parameters for ideal fluid flow around a rotating circular cylindercan be obtained by superposition of some elementary flows. Which one of the following sets would describe the flow around a rotating circular cylinder? 

Match List-I (Types of flow) with List-II (Basic ideal flows) and select the correct answer:

Which one of the following is true of flow around a submerged body?  

Assertion (A): Aircraft wings are slotted to control separation of boundary layer especially at large angles of attack.  
Reason (R): This helps to increase the lift and the aircraft can take off from, and land on, short runways.

Assertion (A): In flow over immersed bodies. 
Reason(R): Drag can be created without life. Life cannot be created without drag.

Dead weight gauge is used for the measurement of pressure of

For solid spheres falling vertically downwards under gravity in aviscous fluid, the terminal velocity, V₁ varies with diameter 'D' of thesphere as  

A cylindrical object is rotated with constant angular velocity about its symmetry axis in auniform flow field of an ideal fluid producing stream lines as shown in the figure given above.At which point(s), is the pressure on the cylinder surface maximum? 

Flow over a half body is studied by utilising a free stream velocity of 5m/s superimposed on a source at the origin. The body has a maximumwidth of 2 m. The co-ordinates of the stagnation point are:  

In given figure, if the pressure of gas in bulb A is 50 cm Hg vacuum and P_atm = 76 cm Hg, then height of column H is equal to     

The pressure gauges G₁ and G₂ installed on the system show pressures of PG₁ = 5.00 bar and PG₂ = 1.00 bar. The value of unknown pressure P is? (Atmospheric pressure1.01 bars) 

Refer to Figure, the absolute pressure ofgas A in the bulb is:  

Hydrostatic law of pressure is given as 

A mercury-water manometer has a gauge difference of 500 mm(difference in elevation of menisci). What will be the difference in pressure? 

Pressure drop of flowing through a pipe (density 1000 kg/m³) between two points is measured by using a vertical U-tube manometer. Manometer uses a liquid with density 2000 kg/m³.The difference in height of manometric liquid in the two limbs of the manometer is observed to be 10 cm. The pressure drop between the two points is: 

Differential pressure head measured by mercury oil differential manometer (specific gravity of oil is 0.9) equivalent to a 600 mm difference of mercury levels will nearly be:  

Pressure drop of water flowing through a pipe (density 1000kg/m³) between two points is measured by using a vertical Utube manometer. Manometer uses a liquid with density 2000 kg /m³. The difference in height of manometric liquid in the two limbs of the manometer is observed to be 10 cm. The pressure drop between the two points is: 

A U-tube manometer is connected to a pipeline conveying water as shown in the Figure. The pressure head of water in the pipeline is