Pick out the wrong conversion of absolute & kinematic viscosities ?

Related Mcqs:

1. The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for ______________ at room temperature ?

   A. Air
   B. Water
   C. Mercury
   D. Alcohol

2. Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas) ?

   A. √T
   B. 1/√P
   C. √y
   D. 1/√ρ

3. Pick out the wrong statement about the machinability of metals. Machinability of a metal ?

   A. Decreases with increase in strain hardening tendencies
   B. Decreases with increase in hardness, in general
   C. Depend on the composition, microstructure and physical & mechanical properties
   D. Decreases with increases in tensile strength & decrease in grain size

4. Pick out the wrong statement?

   A. Processing of thermosetting plastics is ideally done by injection moulding
   B. Processing of thermoplastics is ideally done by compression moulding
   C. Mass production of seamless pipes are done by electrical resistance welding (ERW)
   D. Stretch forming is a process of cold drawing

5. Pick out the wrong statement?

   A. Complete unity of command exists in a line organisation
   B. Line organisation is net suitable for expansion and growth of an industry
   C. In line and staff organisation, “line” executes and “staff directs
   D. None of these

6. Pick out the wrong statement ?

   A. Seam welding, projection welding & spot welding are the classification of electrical resistance
   welding
   B. Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t =
   plate thickness to be welded)
   C. In spot welding, two pieces to be joined are overlapped and placed between two electrodes
   D. Mild steel sheet cannot be spot welded

7. Pick out the wrong statement ?

   A. The X-rays cannot be deflected by electric field unlike cathode rays
   B. The intensity of X-rays can be measured by ionisation current produced due to the ionisation
   of gas by X-rays
   C. The quality of X-rays can be controlled by varying the anode-cathode voltage
   D. Crystal structure of a material can be studied by an electron microscope

8. Pick out the wrong statement?

   A. Ductile fracture of a stressed material, which exhibits a large plastic deformation is commonly
   caused by the formation and coalescence of voids in the necked region
   B. Brittle fracture is caused by the propagation of pre-existing cracks in the material and involves minimum plastic deformation
   C. Fatigue fracture of a material is always brittle in nature and takes place due to the existence of
   line imperfections
   D. Brittle materials are generally tested in tension

9. Pick out the wrong statement about nucleate boiling ?

   A. Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface
   B. Surface temperature is greater than the saturation temperature of the liquid
   C. Heat transfer from the surface of the liquid is less than that in film boiling
   D. The temperature is less than that of film boiling

10. Pick out the wrong statement ?

    A. The equivalent stiffness of two springs (of equal stiffness ‘S’) in series is S/2 while in parallel
    is 2S
    B. For a helical spring, deflection is proportional to D3 (D = mean coil diameter) or d4 (d = wire
    diameter)
    C. Crushing load or columns is less than the buckling load
    D. Modulus of resilience is proportional to (stress at elastic limit)2