Multiple choice question for engineering
1. The velocity vector in a fluid is given V=5x4+3y2+2z( in metre/sec). What is the acceleration of it at point (1,3,4) ?
a) 40 m/s2
b) 20 m/s2
c) 60 m/s2
d) 80 m/s2
2. Determine the third velocity component such that continuity equation is satisfied if two components are u=2y2, w=2xyz.
3. Determine the third velocity component such that continuity equation is satisfied if two components are u=x2+y2+z2, v=xy2 – yz2 + xy
4. A fluid flow field is given by
Calculate it’s acceleration at the point (1,3,5)
d) None of the mentioned
5. A fluid flow field is given by
Calculate it’s acceleration at the point (2,4,4)
d) 36ne of the mentioned
6. Convective acceleration cannot be found if the fluid flow equation is not satisfying
the continuity equation but local acceleration can be found.
7. Local acceleration has constant value for a steady flow.
8. Total acceleration has the same value as convective acceleration in case of unsteady flow.
9. Which equation must be perfunctorily satisfied while dealing with fluid flow problems?
a) Newton’s second law
b) Newton’s third law
c) Law of conservation of momentum
d) Continuity equation
10. Convective acceleration is defined as the rate of change of velocity due to change of velocity with respect to time.
1. Water flows between two plates of which the upper one is stationary and the lower one is moving with a velocity V. What will be the velocity of the fluid in contact with the upper plate?
b) N ⁄ 2
2. The viscous force the relative motion between the adjacent layers of a fluid in motion.
Which one of the flowing fits best in the sentence?
b) never affects
d) may effect under certain conditions
3. The viscosity of a fluid in motion is 1 Poise. What will be it’s viscosity (in Poise) when the fluid is at rest?
4. Which of the following correctly states how the viscosities of a liquid and a gas will change with temperature?
a) Viscosity increases with the increase in temperature of a liquid and decreases with the increase in temperature of a gas
b) Viscosity increases with the increase in temperature of a liquid and increases with the increase in temperature of a gas
c) Viscosity decreases with the increase in temperature of a liquid and decreases with the increase in temperature of a gas
d) Viscosity decreases with the increase in temperature of a liquid and increases with the increase in temperature of a gas
5. Which one of the following is not a unit of dynamic viscosity?
6. Which of the following is a unit of dynamic viscosity?
a) [M1 L1 T-1].
b) [M1 L-1 T-1].
c) [M1 L-2 T-2].
d) [M1 L-2 T-2].
7. Which one of the following is the CGS unit of dynamic viscosity?
8. The dynamic viscosity of a fluid is 1 Poise. What should one multiply to it to get the answer in N-s/m2?
9. Which of the following is a unit of kinematic viscosity?
10. Which of the following is the dimension of kinematic viscosity?
a) [L1 T-1].
b) [L1 T-2].
c) [L2 T-1].
d) [L2 T-2].
11. The kinematic viscosity of a fluid is 0.1 Stokes. What will be the value is m2/s?
12. The shear stress at a point in a liquid is found to be 0.03 N/m2. The velocity gradient at the point is 0.15 s-1. What will be it’s viscosity (in Poise)?
13. The space between two plates (20cm*20cm*1cm), 1 cm apart, is filled with a liquid of viscosity 1 Poise. The upper plate is dragged to the right with a force of 5N keeping the lower plate stationary.
What will be the velocity in m/s of flow at a point 0.5 cm below the lower surface of the upper plate if linear velocity profile is assumed for the flow?
1. Which is the cheapest device for measuring flow / discharge rate.
b) Pitot tube
d) None of the mentioned
2. The principle of Orificemeter is same as that of Venturimeter.
3. What is the relationship between Orificemeter diameter and pipe diameter
a) Orificemeter diameter is 0.5 times the pipe diameter
b) Orificemeter diameter is one third times the pipe diameter
c) Orificemeter diameter is one fourth times the pipe diameter
d) Orificemeter diameter is equal to the pipe diameter
4. The Orificemeter readings are more accurate than Venturimeter.
5. The Orificemeter readings are more accurate than Pitot tube readings.
6. The Orificemeter has a smooth edge hole.
7. A nanometre is connected to a section which is at a distance of about 4 to 6 times the pipe diameter upstream from orifice plate.
8. Venturimeter is based on integral form of Euler’s equation.
9. Orifice Meter can only be used for measuring rate of flow in open pipe like structure.
10. Orifice meter consists of a flat rectangular plate.
1. Which of the following glycoprotein functions as a lubricant and protective agent?
2. Which of the following is a hydroxyl fatty acid?
a) Linoleic acid
b) Palmitic acid
c) Linolenic acid
d) Cerebronic acid
3. Which of the following is false about fatty acids?
a) Melting point of fatty acids decreases with increase in degree of saturation
b) Lipids in tissues that are subjected to cooling are more unsaturated
c) Naturally occurring unsaturated long-chain fatty acids are nearly Trans-configuration
d) The membrane lipids contain mostly unsaturated fatty acids
4. The binding of ligands to many GPCRs leads to
a) Decrease in concentration of second messengers
b) Increase in concentration of second messengers
c) Decrease in concentration of first messengers
d) Increase in concentration of first messengers
5. Which of the following are included in the types of glycolipids?
6. Which of the following catalyzes the cutting of PIP2 into 2 moles of IP3 and diacylglycerol in cell signaling?
a) Phosphokinase C
b) Phospholipase C
d) Phosphodiesterase C
7. Site directed mutagenesis facilitated research on
8. The product formed in the isomerization of mannose 6-phosphate
a) Fructose 6-phosphate
b) Glucose 6-phosphate
9. The first reaction of the pentose phosphate pathway is
a) Oxidation of glucose 6-phosphate to 6-phosphoglucono-δ-lactone
b) Oxidation of 6-phosphogluconate to ketopentose ribulose 5-phosphate
c) Reduction of 6-phosphoglucono-δ-lactone to glucose 6-phosphate
d) Reduction of ketopentose ribulose 5-phosphate to 6-phosphogluconate
10. Oxidation of 3 molecules of glucose by pentose phosphate pathway results in the production of
a) 3 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO2
b) 4 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO2
c) 4 molecules of pentose, 3 molecules of NADPH and 3 molecules of CO2
d) 3 molecules of pentose, 4 molecules of NADPH and 3 molecules of CO2
1. Transcription is catalyzed by
a) DNA-dependent RNA polymerases
b) RNA-dependent DNA polymerases
c) Reverse transcriptases
d) DNA ligases
2. Where does RNA polymerase bind DNA?
3. Which of the following is true about RNA synthesis?
a) Synthesis of RNA is always in the 5’ to 3’ direction
b) RNA polymerase requires a primer for initiating transcription
c) U is inserted opposite T in transcription
d) New nucleotides are added on the 2’-OH of the ribose sugar
4. Role of sigma factor in bacterial RNA polymerase is
a) Catalyzing RNA synthesis
b) Positioning RNA polymerase correctly on the DNA template
c) Terminating RNA synthesis
d) Unwinding DNA template
5. TBP stands for?
a) TATA box polymerase
b) TATA-box binding protein
c) Transcription associated factor
d) Transcription factor binding protein
6. Actinomycin D is an inhibitor of
7. Number of hydrogen bonds that form between U and A in a Watson-Crick base pair interactions?
8. Repressors bind to
d) Hormone response element
9. RNA primer is removed from the Okazaki fragment by
a) DNA polymerase I
b) DNA polymerase II
c) DNA polymerase III
d) RNA polymerase
10. Binding of the prokaryotic DNA dependent RNA polymerase to promoter site is inhibited by