MCQOPTIONS
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MCQOPTIONS
This section includes 79 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Bar is a unit of __________. |
| A. | Length |
| B. | Pressure |
| C. | Mass |
| D. | Force |
| Answer» C. Mass | |
| 52. |
If the flow speeds of the upper and lower surfaces of the wings of an aeroplane are 260m/s and 250m/s, the wings cover an area of 500 m2 then what would be the lift generated (in kN)? (take density of air as 1kg/m3) |
| A. | 637.5 |
| B. | 1275 |
| C. | 2550 |
| D. | 350 |
| Answer» C. 2550 | |
| 53. |
A wooden block floating in a bucket of water has 4/5 of its volume submerged. When certain amount of an oil is poured into the bucket, it is found that the block is just under the oil surface with half of its volume under water and half in oil. The density of oil relative to that of water is: |
| A. | 0.5 |
| B. | 0.8 |
| C. | 0.6 |
| D. | 0.7 |
| Answer» D. 0.7 | |
| 54. |
Pascal (Pa) is defined as |
| A. | newton (N) × m |
| B. | newton (N) / m2 |
| C. | newton (N) × m2 |
| D. | m2 / newton (N) |
| Answer» B. newton (N) / m2 | |
| 55. |
Angle between the viscous force and the direction of flow of the liquid is: |
| A. | π/2 |
| B. | π/4 |
| C. | π |
| D. | zero |
| Answer» D. zero | |
| 56. |
Consider a Young’s double slit experiment as shown in figure.What should be the slit separation d in terms of wavelength λ such that the first minima occurs directly in front of the slit (S1)? |
| A. | \(\frac{\lambda }{{2\left( {5 - \sqrt 2 } \right)}}\) |
| B. | \(\frac{\lambda }{{\left( {5 - \sqrt 2 } \right)}}\) |
| C. | \(\frac{\lambda }{{2\left( {\sqrt 5 - 2} \right)}}\) |
| D. | \(\frac{\lambda }{{\left( {\sqrt 5 - 2} \right)}}\) |
| Answer» D. \(\frac{\lambda }{{\left( {\sqrt 5 - 2} \right)}}\) | |
| 57. |
If some object is weighed when submerged in water, what will happen to its weight compared to its weight in air? |
| A. | Increased |
| B. | Decrease |
| C. | Remain exactly the same |
| D. | Increase or decrease cannot be predicted |
| Answer» C. Remain exactly the same | |
| 58. |
A glass bottle filled with liquid will break at the bottom if a stopper is forced into its open end as per |
| A. | Hydrostatic law |
| B. | Pascal’s law |
| C. | Gravitational law |
| D. | Bernoulli’s law |
| Answer» C. Gravitational law | |
| 59. |
A body is immersed in water filed in a beaker. If the system falls freely, the up thrust on the body is equal to |
| A. | zero |
| B. | Weight of body in Air |
| C. | Weight of body in water |
| D. | Half of the weight of the body in Air |
| Answer» B. Weight of body in Air | |
| 60. |
An iron needle floats on the surface of water because of : |
| A. | buoyancy of the liquid |
| B. | viscosity |
| C. | gravitational force |
| D. | surface tension |
| Answer» E. | |
| 61. |
Mercury is used in barometer because of its _____ |
| A. | High boiling point |
| B. | Low melting point |
| C. | High melting point |
| D. | High density |
| Answer» E. | |
| 62. |
_____________ is a general expression that relates the pressure difference between two points in a pipe to both velocity changes (kinetic energy change) and elevation (height) changes (potential energy change). |
| A. | Bernoulli’s equation |
| B. | Equation of Continuity |
| C. | Equation of buoyancy |
| D. | Euler's equation |
| Answer» B. Equation of Continuity | |
| 63. |
If the surface tension of water-air interface is 0.073 N/m, the gauge pressure inside a rain drop of 1 mm diameter will be |
| A. | 0.146 N/m2 |
| B. | 73 N/m2 |
| C. | 292 N/m2 |
| D. | 146 N/m2 |
| Answer» D. 146 N/m2 | |
| 64. |
Bernoulli's principle is based on the law of conservation of: |
| A. | Mass |
| B. | Energy |
| C. | Momentum |
| D. | None of the above |
| Answer» C. Momentum | |
| 65. |
A closed organ pipe has a fundamental frequency of 1.5 kHz. The number of overtones that can be distinctly heard by a person with this organ pipe will be (Assume that the highest frequency a person can hear is 20,000 Hz) |
| A. | 7 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» B. 4 | |
| 66. |
A_LIQUID_HAS_A_MASS_DENSITY_OF_1550_KG/M3._CALCULATE_ITS_SPECIFIC_WEIGHT.?$ |
| A. | 1.50√ó102 N/m<sup>3</sup> |
| B. | 1.52√ó104 N/m<sup>3</sup> |
| C. | 1.54√ó104 N/m<sup>3</sup> |
| D. | 1.50√ó104 N/m<sup>3</sup> |
| Answer» C. 1.54‚Äö√†√∂‚àö‚â•104 N/m<sup>3</sup> | |
| 67. |
Refer to Q 10 and Q11, and calculate specific volume.$ |
| A. | 6.51 √ó 10-5 m<sup>3</sup>/N |
| B. | 6.78 √ó 10-5 m<sup>3</sup>/N |
| C. | 6.45 √ó 10-5 m<sup>3</sup>/N |
| D. | 6.57 √ó 10-5 m<sup>3</sup>/N |
| Answer» E. | |
| 68. |
Refer to Q10 and calculate specific gravity.$ |
| A. | 1.55 |
| B. | 1.56 |
| C. | 1.50 |
| D. | 1.54 |
| Answer» B. 1.56 | |
| 69. |
“Mach is the Dimensionless quantity”.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 70. |
Refer to Q13 and determine the shear stress at y =7.5cm. |
| A. | 1.46 N/m<sup>3</sup> |
| B. | 1.45 N/m<sup>3</sup> |
| C. | 1.40 N/m<sup>3</sup> |
| D. | 1.43 N/m<sup>3</sup> |
| Answer» B. 1.45 N/m<sup>3</sup> | |
| 71. |
If the equation of a velocity profile over a plate is v = 5y2 + y (where v is the velocity in m/s) determine the shear stress at y =0. Given the viscosity of the liquid is 8.35 poise. |
| A. | 0.830 |
| B. | 0.832 |
| C. | 0.835 |
| D. | 0.834 |
| Answer» D. 0.834 | |
| 72. |
Refer to Q8 and Calculate specific gravity of the oil. (Specific weight of water = 9.807 kN/m3? |
| A. | 0.991 |
| B. | 0.918 |
| C. | 0.917 |
| D. | 0.992 |
| Answer» D. 0.992 | |
| 73. |
If 5 m3 of certain oil weighs 45 kN calculate the specific weight of the oil? |
| A. | 10 kN/m<sup>3</sup> |
| B. | 9 kN/m<sup>3</sup> |
| C. | 5 kN/m<sup>3</sup> |
| D. | 2 kN/m<sup>3</sup> |
| Answer» C. 5 kN/m<sup>3</sup> | |
| 74. |
What is the unit of viscosity of fluids in C.G.S? |
| A. | ml/s |
| B. | l/s |
| C. | Poise |
| D. | Newton |
| Answer» D. Newton | |
| 75. |
What do you mean by the term “Rheology”?$ |
| A. | Study of materials with both solid and fluid characteristics |
| B. | Study of materials with only solid characteristics |
| C. | Study of materials with only fluid characteristics |
| D. | Study of material with both fluid and gas characteristics |
| Answer» B. Study of materials with only solid characteristics | |
| 76. |
Which of the following is not an example of a Newtonian fluid? |
| A. | Water |
| B. | Glycerine |
| C. | Non- Drip Paints |
| D. | Alcohol |
| Answer» D. Alcohol | |
| 77. |
Fluids which undergo strain rates proportional to the applied shear stress are termed as? |
| A. | Inviscid fluid |
| B. | Newtonian fluid |
| C. | Non- Newtonian fluid |
| D. | Viscous fluid |
| Answer» C. Non- Newtonian fluid | |
| 78. |
What is the property of an ideal or perfect fluid? |
| A. | Compressible and zero viscosity |
| B. | Compressible and zero density |
| C. | Incompressible and zero viscosity |
| D. | Incompressible and zero density |
| Answer» D. Incompressible and zero density | |
| 79. |
“The density of liquids is practically dependent of pressure”? |
| A. | True |
| B. | False |
| Answer» C. | |