Description : In open channel flow in a rectangular channel, the ratio between the critical depth and the initial depth, when a hydraulic jump occurs is (A) 0.5 (B) 0.84 (C) 1.84 (D) 1.25
Last Answer : (C) 1.84
Description : The critical depth meter is used to measure (A) Velocity of flow in an open channel (B) Depth of flow in an open channel (C) Hydraulic jump (D) Depth of channel
Last Answer : Answer: Option C
Description : Pick up the incorrect statement from the following: (A) As a wave of sea water approaches the coast line, it is generally accompanied by a drift of water in the direction of wave advance (B) ... in the direction of the wave (D) The wave while receding carries finer particles out to deep water
Last Answer : (C) A falling hydraulic gradient occurs in the direction of the wave
Description : If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is (A) Unstable (B) Stable and statically determinate (C) Stable and statically indeterminate (D) None of the above
Last Answer : (A) Unstable
Description : If in a pin-jointed plane frame (m + r) > 2j, then the frame is (A) Stable and statically determinate (B) Stable and statically indeterminate (C) Unstable (D) None of the above
Last Answer : (B) Stable and statically indeterminate
Description : If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in (A) Neutral equilibrium (B) Stable equilibrium (C) Unstable equilibrium (D) None of these
Last Answer : Answer: Option B
Description : If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium. (A) Neutral (B) Stable (C) Unstable (D) None of these
Last Answer : Answer: Option A
Description : The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement. (A) The bodies A and B have equal stability (B) The body A is more stable than body B (C) The body B is more stable than body A (D) The bodies A and B are unstable
Description : A hydraulic jump in a control meter will be formed above the control, if its original (A) Depth is more than critical depth (B) Depth is less than the critical depth (C) Depth is equal to critical depth (D) None of these
Description : What During blank an unstable isotope breaks down into a stable isotope?
Last Answer : It is by radioactive decay that unstable isotopes break down into stable isotopes.
Description : Transition state structure of the substrate formed during an enzymatic reaction is (a) transient and unstable (b) permanent and stable (c) transient but stable (d) permanent but unstable.
Last Answer : (a) transient and unstable
Description : Which of the following is/are acceptable reasons for the transfusion of red blood cells based on currently available data? A. Rapid, acute blood loss with unstable vital signs but no available ... increase wound healing. D. A hematocrit of 26% in an otherwise stable, asymptomatic patient.
Last Answer : Answer: AB DISCUSSION: Currently accepted guidelines for the transfusion of packed red blood cells include acute ongoing blood loss, as might occur in an injured patient, and the development of ... not be given based solely or predominantly on a numerical value such as a hematocrit of 28%
Description : Flash floods are caused when (A) the atmosphere is convectively unstable and there is considerable vertical wind shear (B) the atmosphere is stable (C) the atmosphere is convectively unstable with no vertical windshear (D) winds are catabatic
Last Answer : (A) the atmosphere is convectively unstable and there is considerable vertical wind shear
Description : Radioactivity is due to a) Stable electronic configuration b) Unstable electronic configuration c) Stable nucleus d) Unstable nucleus
Last Answer : Radioactivity is due to a) Stable electronic configuration b) Unstable electronic configuration c) ... C. stable nucleus D. unstable nucleus
Description : What is a way to determine age of fossil by comparing number of stable isotopes to number of unstable isotopes using half life?
Last Answer : Carbon decay or carbon dating
Description : Radio activity is due to – (1) unstable nucleus (2) stable nucleus (3) stable electronic configuration (4) stable electronic configuration
Last Answer : (1) unstable nucleus Explanation: Radioactivity is caused by unstable nuclei trying to become stable by emitting particles and or energy. The nuclei of radioactive substances are unstable due to an unstable ratio of protons to neutrons.
Description : Nuclear radiation is emitted by those elements whose: A. molecules are stable B. molecules are unstable C. nuclei are stable D. nuclei are unstable (Answer)
Last Answer : D. nuclei are unstable (Answer)
Description : Which statement is true? (a) Resonance hybrids are inherently unstable. (b) Resonance hybrids are more stable than any individual resonance form. (c) Resonance hybrids are averages of all resonance ... forms. (d) Resonance hybrids are averages of all resonance forms resembling the more stable forms.
Last Answer : Resonance hybrids are averages of all resonance forms resembling the more stable forms.
Description : If an element has two electrons in the first shell and seven in the second shell, the element is said to be what? a. Unstable b. Unreactive c. Stable d. Inert
Last Answer : a. Unstable
Description : Which phase of the trajectory model of chronic illness is characterized by reactivation of the illness? a) Unstable The unstable phase is characterized by development of complications or reactivation of the ... comeback phase is the period in the trajectory marked by recovery after an acute period.
Last Answer : a) Unstable The unstable phase is characterized by development of complications or reactivation of the illness.
Description : ________ is a quantitative measure of how fair the transients die cut in the system. (a) Absolutely stable (b) Conditionally stable (c) Unstable (d) Relative stability
Last Answer : (d) Relative stability
Description : If root of the characteristics equation has positive real part system is (a) Stable (b)Unstable (C) Marginally stable (d) Linear
Last Answer : (b)Unstable
Description : If the impulse response in absolutely integrate then the system is (a)Absolutely stable (b)Unstable (C) Linear (d) Stable
Last Answer : (a)Absolutely stable
Description : G(s) = (1-s)/s(s+2) then closed loop transfer function is a) Unstable b) Stable c) Marginally stable d) All
Last Answer : Ans: Stable
Description : ‘Fanning’ smokestack plumes are observed when A. There is an inversion above the ground surface. B. There is unstable atmosphere. C. There is neutrally stable atmosphere. D. The stack height is below an inversion layer.
Last Answer : A. There is an inversion above the ground surface
Description : Radio activity is due to (1) unstable nucleus (2) stable nucleus (3) stable electronic configu-ration (4) stable electronic configu-ration
Last Answer : unstable nucleus
Description : Define stability. Sketch the root locations in the s-plane for stable and unstable system.
Last Answer : Stability: The system is said to be stable if it produces bounded output for a bounded input. It is used to define usefulness of the system. The stability implies that the system performance should not ... absence of the input, output may not return to zero it shows certain output without input.
Description : Pick up the correct statement from the following: (A) The phenomenon of quicksand generally occurs in the cohesionless soil (B) At critical hydraulic gradient, the saturated sand becomes quick (C) The critical gradient depends on the void ratio and the specific gravity (D) All the above
Last Answer : (D) All the above
Description : Pick up the incorrect statement from the following: (A) The rate of flow of water through a unit cross-sectional area under a unit hydraulic gradient, is called coefficient of permeability (B) ... aquifers, is governed by the Darcy's law (D) The term 'transmissibility' was introduced by Meinzer
Last Answer : Answer: Option D
Description : 18. A flow through an expanding tube at increasing rate is called unsteady non-uniform flow. A) Yes B) No
Last Answer : A
Description : 12. The flow at critical depth in an open channel is called torrential flow. A) Yes B) No
Last Answer : B
Description : If the viscosity of ground water is 1.00, the Slitcher's constant is 400, the effective size of soil particles in aquifer is 0.5 mm and hydraulic gradient is 1 in 80, the velocity of flow is (A) 0.25 m/day (B) 0.50 m/day (C) 1.00 m/day (D) 1.25 m/day
Description : 11. The velocity at which the turbulent flow starts is known as higher critical velocity. A) Yes B) No
Description : Which phase of the trajectory model of chronic illness is characterized by the gradual or rapid decline in the trajectory despite efforts to halt the disorder? a) Dying The dying phase ... symptoms worsen or the disability progresses despite attempts to control the course through proper management.
Last Answer : a) Dying The dying phase is characterized by stoppage of life-maintaining functions.
Description : A critical hydraulic gradient may occur when (A) Flow is in upward direction (B) Seepage pressure is in upward direction (C) Effective pressure is zero (D) All the above
Description : If Nf , Nd and H are total number flow channels, total number of potential drops and total hydraulic head differences respectively, the discharge q through the complete flow is given by (where K is a constant) (A) q = (Nf/Nd) (B) q = KH (Nd/(Nf ) (C) q = KH (Nf/Nd) (D) q = KH Nf/Nd)
Description : In a flow net (A) Flow lines and equipotential lines cross each other at right angles (B) Fields are rectangles whose length is twice the breadth (C) Smaller the dimensions of the field, ... gradient and velocity of flow through it (D) For homogeneous soil, the curves are smooth and circular
Last Answer : Option A
Description : The hydraulic mean depth or the hydraulic radius is the ratio of (A) Area of flow and wetted perimeter (B) Wetted perimeter and diameter of pipe (C) Velocity of flow and area of flow (D) None of these
Description : According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed) (A) A × m × i) (B) C × m × i) (C) AC × m × i) (D) mi × A × C)
Description : Consider the following statements in respect of steady laminar flow through a circular pipe: 1. Shear stress is zero on the central axis of the pipe 2. Discharge varies directly with the viscosity of the fluid 3. Velocity is maximum at the ... 2 , 3 & 4 (b) 1 & 3 only (c) 2 & 4 only (d)3 & 4 only
Last Answer : (b) 1 & 3 only
Description : Overland flow drainage on and from the tarmac of an airport invokes, in its design, principles involving : (a) Spatially varied flow without hydraulic jumps (b) Backwater flow (c) ... throughout (d) Attention to rolling flows within spatially varied flows and possibly to moving hydraulic jumps
Last Answer : (a) Spatially varied flow without hydraulic jumps
Description : The following are true about ocular circulation: a. only 4% of the total blood supply to the eye goes to the retina b. the choroidal blood flow in normal people is ten times that of the grey mater ... and choroidal circulation d. a PaCO2 rise of 1 mm Hg induces a 3% rise in retinal blood flow
Last Answer : a PaCO2 rise of 1 mm Hg induces a 3% rise in retinal blood flow
Description : The flow velocity in detritus tanks is A. 0.05 m/sec B. 0.09 m/sec C. 1.25 m/sec D. None of these
Last Answer : ANS: B
Description : In detritus tanks, A. Flow velocity is kept 0.09 m/sec B. Detention period is kept 3 to 4 minutes C. Organic and inorganic materials are separated D. All the above
Last Answer : ANS: D
Description : The translocation of organic solutes in sieve tube members is supported by (a) cytoplasmic streaming (b) root pressure and transpiration pull (c) P-proteins (d) mass flow involving a carrier and ATP
Last Answer : (a) cytoplasmic streaming
Description : 09. According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir. A) Correct B) Incorrect
Description : A pin-jointed plane frame is unstable if (A) (m + r) < 2j (B) (m + r) = 2j (C) (m + r) > 2j (D) None of the above Where m is number of members, r is reaction components and j is number of joints
Last Answer : (A) (m + r) < 2j
Description : An arch with three hinges, is a structure (A) Statically determinate (B) Statically indeterminate (C) Geometrically unstable (D) Structurally sound but indeterminate
Last Answer : (A) Statically determinate
Description : Alignment of highways in hilly regions, is decided on (A) Long stretch of very hard cutting (B) Number of river crossings (C) Natural unstable areas (D) All the above