The resistance wire used in a hot wire anemometer for conducting electrical current is made of__________________?

Related Mcqs:

1. Hot wire anemometer is used to measure the_________________?

   A. Velocity of liquids
   B. Temperature of liquids
   C. Velocity of gases
   D. Pressure of liquids

2. Vane anemometer __________________?

   A. Is an area meter
   B. Is a variable head meter
   C. Rotates an element at a speed determined by the velocity of the fluid in which the meter is
   immersed
   D. None of these

3. In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of___________________?

   A. Relative roughness
   B. Absolute roughness
   C. Friction co-efficient for flows at equal Reynold number
   D. All A., B. & C.

4. A hydraulic accumulator comprises of__________________?

   A. A storage device and a control valve
   B. A cylinder and a plunger
   C. Two pistons and two cylinders
   D. A storage tank and a ram pump

5. Froude number is the ratio of__________________?

   A. Shear stress to gravitational stress
   B. Drag stress to shear stress
   C. Inertial stress to shear stress
   D. Inertial stress to gravitational stress

6. Fluid resistance to shear depends upon its_______________?

   A. Rate of transfer of molecular momentum
   B. Cohesion
   C. Both A. and B.
   D. Neither A. nor B.

7. The frictional resistance in laminar flow does not depend on the_________________?

   A. Area of surface in contact
   B. Flow velocity
   C. Fluid temperature
   D. Pressure of flow

8. Which of the following properties of a fluid is responsible for offering resistance to shear ?

   A. Surface tension
   B. Viscosity
   C. Specific gravity
   D. All A., B., and C.

9. Terminal velocity is_____________________?

   A. A constant velocity with no acceleration
   B. A fluctuating velocity
   C. Attained after moving one-half of total distance
   D. None of these

10. The line of action of the buoyant force acts through the____________________?

    A. Centroid of the displaced volume of fluid
    B. Centre of gravity of a submerged body
    C. Centroid of the volume of any floating body
    D. None of these