Description : Veins tend to have the following except: a) valves for unidirectional flow b) very elastic walls c) thin walls d) increasing size toward the heart
Last Answer : ANSWER: B -- very elastic walls
Description : In veins, valves are present to check backward flow of blood flowing at (a) atmospheric pressure (b) high pressure (c) low pressure (d) all of these.
Last Answer : (c) low pressure
Description : Check valve is used for __________ flow. (A) Very precise control of (B) Unidirectional (C) Multidirectional (D) None of these
Last Answer : (B) Unidirectional
Description : How do you control power in a jet engine? a. By controlling the mixture ratio b. By controlling the fuel flow c. By controlling the airflow d. By controlling the bleed valves
Last Answer : b. By controlling the fuel flow
Description : Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the (A) Back flow of fluid in the event of stoppage of pump (B) Discharge pressure (C) Flow of liquid during operation of the pump (D) All (A), (B) and (C)
Last Answer : (A) Back flow of fluid in the event of stoppage of pump
Description : Purpose of relief valve in a reciprocating pump is to (A) Protect the pump against developing excessive pressure (B) Facilitate unidirectional flow of liquid (C) Reduce the discharge pressure (D) Control the rate of discharge
Last Answer : (A) Protect the pump against developing excessive pressure
Description : Which of the following exhibits unidirectional flow in an ecosystem? (1) Light (2) Energy (3) Water (4) Biomass
Last Answer : (2) Energy Explanation: Ecosystems contain essentially two kinds of commodities: matter (nutrients) and energy. Material nutrients cycle through the biotic and abiotic parts of the ecosystem, available for ... Eventually, all of the energy that enters the ecosystem is lost in the form of heat.
Description : Which of the following exhibits unidirectional flow in an ecosystem ? (1) Light (2) Energy (3) Water (4) Biomass
Last Answer : Energy
Description : Which of the following factors does not contribute to the pressure drop in a pipeline? (A) Velocity of fluid (B) Size of pipe (C) Length of pipe and number of bends (D) None of these
Last Answer : (D) None of these
Description : "Energy flow in a food chain is unidirectional" Justify this statement. -Science
Last Answer : The flow of energy in the ecosystem is said to be unidirectional because the energy lost as heat from the living organisms of a food chain cannot be reused by plants in photosynthesis.
Description : The _______ is a unidirectional protocol that has no flow or error control. A. Simplest B. Simplex C. TCP/IP protocol D. Simplest or Simplex
Last Answer : D. Simplest or Simplex
Description : It is an unidirectional device that blocks the current flow from cathode to anode (A) SCR (B) PCR (C) VCR (D) DCR
Last Answer : It is an unidirectional device that blocks the current flow from cathode to anode SCR
Description : Pick out the wrong statement. (A) The mole fraction of solute is directly proportional to the molality of a 'dilute' solution (B) For a non-reacting binary mixture of ideal gases, the partial ... at all temperature (D) The relative volatility of a binary mixture at the Azeotropic composition is 1
Last Answer : (C) Azeotropes obey Raoult's law at all temperature
Description : Pick out the wrong statement. (A) The controlling resistance in case of heating of air by condensing steam is in the air film (B) The log mean temperature difference (LMTD) for ... a pure fluid at a given pressure from liquid to vapor or vice-versa occurs at saturation temperature
Last Answer : (C) In case of a 1 - 2 shell and tube heat exchanger, the LMTD correction factor value increases sharply, when a temperature cross occurs
Description : Check valves are installed (A) On the delivery side of the pumping set (B) At the interconnections between polluted water system and a potable water system (C) Both (a) and (b) (D) Neither (a) nor (b)
Last Answer : (C) Both (a) and (b)
Description : A pressure conduit laid underground, may not be subjected to (A) Internal pressure of water (B) Pressure due to external load (C) Longitudinal temperature stress (D) Longitudinal stresses due to unbalanced pressure to bends
Last Answer : (C) Longitudinal temperature stress
Description : What are non-slam check valves?
Last Answer : Answer: Swing check valve, conventional check valve, wafer check valve, tilting disc check valve, piston check valve, stop check valve, ball check valve.
Description : These bends are caused by excessive pressure and tension and generally occur while fiber are bent during handling or installation. ∙ A. microbending ∙ B. macrobending ∙ C. constant-radius bending ∙ D. kinks
Last Answer : C. constant-radius bending
Description : These bends are caused by excessive pressure and tension and generally occur while fiber are bent during handling or installation.
Last Answer : constant-radius bending
Description : Sluice valves in main water supplies (A) Are used to regulate the flow of water in pipes (B) Are spaced about 5 km apart (C) Are usually placed at the summits (D) All the above
Last Answer : (D) All the above
Description : Which of the following valves will incur maximum pressure drop for the same discharge of water? (A) Globe valve (B) Gate valve (C) Needle valve (D) Butterfly valve
Last Answer : (C) Needle valve
Description : Why are vacuum tubes also called valves? A) Because they can amplify the weak signals and make them strong B) Because they can stop or allow the flow of current C) Both of above D) None of above
Last Answer : Answer : B
Description : The picture shown here is a check dam. Which of the following benefit it does not provide. A. Increasing ground water level. B. Controlling the floods. C. Reducing soil erosion. D. Fishing activity.
Last Answer : D. Fishing activity.
Description : Foot valves provided in pumps are __________ valves. (A) Relief (B) Three/four way (C) Pressure reducing (D) Directional contro
Last Answer : (D) Directional control
Description : Which of the following pipe bends will incur the largest head loss? (A) U-bend (B) 30° bend (C) 45° bend (D) 90° bend
Last Answer : (A) U-bend
Description : Due to its construction, the component in figure 'A' shown in the illustration has which of the listed advantages compared to bipolar devices? EL-0078 A. Operates with higher voltages and ... as a controllable rectifier. D. Has very high input resistance and uses practically no gate current.
Last Answer : Answer: D
Description : The use of four diodes, in a full-wave bridge rectifier circuit, will __________. A. provide unidirectional current to the load B. allow a very high leakage current from the load C. convert direct current to alternating current D. offer high opposition to current in two directions
Last Answer : Answer: A
Description : Binary distillation involves the mass transfer by __________ at the gasliquid interface. (A) Unidirectional diffusion from liquid to gas phase (B) Unidirectional diffusion from gas to liquid phase (C) Either 'a' or 'b' (D) A counter diffusion at an almost equal molar rate
Last Answer : (D) A counter diffusion at an almost equal molar rate
Description : Before constructing a dam, the factor to be considered for controlling sedimentation, is (A) Selection of dam site (B) Construction of check dams (C) Providing vegetation screens (D) All the above
Description : Pressure relief valves are provided in water mains (A) To reduce the pressure (B) At low points (C) Upstream of sluice (D) All the above
Description : Air valves are generally provided in pressure pipes of water supply (A) At pipe junctions (B) At summits (C) At low points (D) Near service pipes
Last Answer : (B) At summits
Description : In pressure supply mains, water hammer pressure is reduced by providing (A) Sluice valves (B) Air valves (C) Pressure relief valves (D) None of these
Last Answer : (C) Pressure relief valves
Description : Monel alloy is (A) The costliest of all the alloys of nickel (B) Not suitable for making kitchen utensils (C) Used for making steam valves and turbine blades as it resists steam attack at high temperature (D) Not used in cast and wrought forms
Last Answer : (C) Used for making steam valves and turbine blades as it resists steam attack at high temperature
Description : 1. A ray of light travelling in air enters obliquely into water. Does the light ray bends towards the normal or away from the normal? Why? -Physics-10
Last Answer : The light ray bends towards the normal. When a light ray enters from an optically rarer medium (which has low refractive index) to an optically denser medium (which has a high refractive index), ... denser than air, a ray of light entering from air into water will bend towards the normal.
Description : Consider the following statements: 1. A pool of water looks shallower than it actually is. 2. Light bends towards the normal while travelling from water to air. Which of the above statements is/are correct? (a) Both (b) None (c) 1 only (d) 2 only
Last Answer : Ans:(c)
Description : When light moves from air to water the ray of light bends ________ the normal. a) away b)towards c)along d)no change
Last Answer : b)towards
Description : The curved body of water formed when a meandering river reshapes and cuts off one of its bends is called: w) an Essing pond x) an Oxbow lake y) a Swensen pool z) a Groovy pool
Last Answer : ANSWER: X -- AN OXBOW LAKE
Description : In humans, blood passes from the post caval to the diastolic right atrium of heart due to (a) stimulation of the sino auricular node (b) pressure difference between the post caval and atrium (c) pushing open of the venous valves (d) suction pull.
Last Answer : (b) pressure difference between the post caval and atrium
Description : What pressure tests are carried out on valves?
Last Answer : Answer: Shell-hydrostatic, seat-hydrostatic, seat-pneumatic
Description : Do crabs get "The Bends" when harvested from the ocean floor?
Last Answer : I think their circulatory systems are different from ours…......
Description : Do bends to drastic degrees in optical fibre reduce signal compared to when it's straight?
Last Answer : It’s digital, so there is no such thing as reduced signal. You have signal, or you don’t.
Description : How do you get bends and creases out of leather?
Last Answer : You could take it to a dry cleaners, who would fix it up quite easily I imagine. OR, if you have one, you could use a steamer. Failing that, using a damp towel and an iron on it's lowest setting ... spot first though to be on the safe side and check every few touches to make sure all is well. :)
Description : my main stalk on my dogwood, does not grow straight up. instead it bends over and around why?
Last Answer : Need Answer
Description : A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle 30° with it. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Find the height of the tree. -Maths 9th
Last Answer : The broken part bends so that the top of the tree touches the ground making an angle 30 °. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Original height of ... After rationalising Now we have , A`BC = AB + BC Take LCM So , original height of tree is
Last Answer : Shameless self-promotion for Ballistic Products and a great bargain on a neat little knife for you.
Description : What kind of river flows downstream and creates sweeping bends?
Last Answer : Feel Free to Answer
Description : Why can you get the bends?
Last Answer : The reason you get the bends is because of the nitrogen inside the tank. When you are deep under water the pressure gets higher. If you stay at 20ft for 5 minutes this will release all the nitrogen ... top the nitrogen spews out too quickly which is bad so, when that happens you will get the bends.
Description : My penis bends slightly up and slightly to the left is this normal?
Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want