Description : A block of wood is floating in a lake. The apparent weight of the floating block is (a) Zero (b) Equal to its true weight (c) More than its true weight (d) Less than its true weight
Last Answer : Ans:(a)
Description : Which principle states that when a body is partially or totally immersed in a fluid, it experiences an upward thrust equal to the weight of the fluid displaced by it?
Last Answer : Archimedes
Description : The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to (A) Buoyancy (B) Equilibrium of a floating body (C) Archimedes' principle (D) Bernoulli's theorem
Last Answer : Answer: Option C
Description : 12. The tendency of a liquid to uplift a submerged body, because of the upward thrust of the liquid, is known as buoyancy. A) Agree B) Disagree
Last Answer : A
Description : A piece of wood is held under water. The up thrust on it will be: (1) equal to the weight of the Wood (2) less than weight of the wood (3) more than weight of the wood (4) Zero
Last Answer : (2) less than weight of the wood Explanation: According to the Archimedes' principle, a floating object will experience an upthrust force from water, equal to the weight of water displaced (pushed aside ... until it reaches the point where the weight of the water pushed aside equals its own weight.
Description : If there were no gravity, which of the following will not be there for a fluid? (1) Viscosity (2) Surface Tension (3) Pressure (4) Upward Thrust
Last Answer : (4) Upward Thrust Explanation: If there is no gravity, there will not be any upward thrust to keep a liquid buoyant. Whenever a body is placed in a fluid, the fluid applies resultant up ... gravity at the given place. Up thrust increases with increase in acceleration due to gravity and vice versa.
Last Answer : Upward Thrust
Description : The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the submerged body is called (A) Up-thrust (B) Reaction (C) Buoyancy (D) Metacentre
Description : The resultant upward pressure of the fluid on an immersed body is called (A) Up-thrust (B) Buoyancy (C) Center of pressure (D) All the above are correct
Last Answer : Answer: Option B
Description : If lift is going up with acceleration, the apparent weight of a body is - (1) may be more or less than true weight (2) equal to the true weight (3) less than the true weight (4) more than the true weight
Last Answer : (4) more than the true weight Explanation: If lift is going up with acceleration, the apparent weight of a body is more than the true weight.
Description : If a lift is going up with acceleration, the apparent weight of a body is - (1) More or less the true weight (2) Equal to the true weight (3) Less than the true weight (4) More than the true weight
Last Answer : (4) More than the true weight Explanation: If a lift is going up with acceleration, the apparent weight of a body is more than the true weight.
Description : Rain drops falling through atmospheric air attain limited terminal velocity, because of (A) Upward thrust due to air (B) Viscous force exerted by air (C) Surface tension effects of water (D) Force of gravity
Last Answer : Option B
Description : The apparent error on reversal is (A) Equal to the actual error (B) Twice the actual error (C) Thrice the actual error (D) None of these
Last Answer : (B) Twice the actual error
Description : Pick up the correct statement from the following: (A) The apparent error on reversal is twice the actual error (B) The correction may be made equal to half the observed discrepancy (C) The ... a defective instrument by reversing and taking the mean of two erroneous results (D) All the above
Last Answer : (D) All the above
Description : Two rods, one of copper and other of steel, experience the same up thrust when placed in water. Thus, both have – (1) equal volume (2) equal weight (3) equal density (4) equal mass
Last Answer : (1) equal volume Explanation: When a body is placed in water, the upthrust or buoyant force acting on it depends upon the following factors: (1) Volume of the body submerged in the liquid - (V), or volume of ... (V); (ft) Density of the liquid - (d); and (Hi) Acceleration due to gravity In-line.
Description : When a body is placed over a liquid, it will float if (A) Gravitational force is equal to the up-thrust of the liquid (B) Gravitational force is less than the up-thrust of the liquid (C) Gravitational force is more than the up-thrust of the liquid (D) None of the above
Description : When a body is placed over a liquid, it will sink down if (A) Gravitational force is equal to the up-thrust of the liquid (B) Gravitational force is less than the up-thrust of the liquid (C) Gravitational force is more than the up-thrust of the liquid (D) None of the above
Description : A force applied to a rocket gives it an upward acceleration equal to 2 times the acceleration of gravity. The magnitude of the force is equal to: w) the weight of the rocket x) twice the weight of the rocket y) three times the weight of the rocket z) four times the weight of the rocket
Last Answer : ANSWER: Y -- THREE TIMES THE WEIGHT OF THE ROCKET
Description : The liquidity index is defined as a ratio expressed as percentage of (A) Plastic limit minus the natural water content, to its plasticity index (B) Natural water content minus its plastic limit ... to its plasticity index (D) Liquid limit minus the natural water content to the plasticity index
Last Answer : (B) Natural water content minus its plastic limit to its plasticity index
Description : The consistency index of a soil is defined as the ratio of (A) Liquid limit plus the natural water content to the plasticity index of the soil (B) Liquid limit minus the natural water content to ... (D) Natural water content of a soil plus its plastic limit to the plasticity index of the soil
Description : When using a multimeter for resistance measurements, it should be calibrated by clipping the loose ends of the leads together and _____________. A. setting the instrument pointer at 'zero' ohms B. ... the plus and minus terminals D. using a special purpose resistance measuring instrument (a bridge)
Last Answer : Answer: A
Description : Choose the wrong statement (A) Any weight, floating or immersed in a liquid, is acted upon by a buoyant force (B) Buoyant force is equal to the weight of the liquid displaced (C) The ... the center of buoyancy (D) Center of buoyancy is located above the center of gravity of the displaced liquid
Last Answer : Answer: Option D
Description : Archimedes principle states that a. when a body is inversed in a fluid, the fluid exerts a downward force on the body whose magnitude is equal to the weight of the displaced fluid b. ... fluid exerts a downward force on the body whose magnitude is lower than the weight of the displaced fluid.
Last Answer : when a body is inversed in a fluid, the fluid exerts a upward force on the body whose magnitude is equal to the weight of the displaced fluid.
Description : An object is projected vertically upward near the surface of the earth. At the very top of its path, the object's velocity is zero, and its acceleration is: w) 0 x) 9.8 meters per second squared DOWNWARD y) 9.8 meters per second squared UPWARD z) depends on the mass of the object
Last Answer : ANSWER: X -- 9.8 METERS PER SECOND SQUARED DOWNWARD
Description : A floating body always displaces liquid equal to its which thing? -Do You Know?
Last Answer : answer:
Description : A floating body always displaces liquid equal to its which thing?
Last Answer : Weight
Description : Buoyant force is (A) Resultant force acting on a floating body (B) Equal to the volume of liquid displaced (C) Force necessary to keep a body in equilibrium (D) The resultant force on a body due to the fluid surrounding it
Description : Buoyant force is (A) The resultant force acting on a floating body (B) The resultant force on a body due to the fluid surrounding it (C) Equal to the volume of liquid displaced (D) The force necessary to maintain equilibrium of a submerged body
Description : Volume of liquid displaced by a floating body is equivalent to its (A) Own weight (B) Submerged weight (C) Own volume (D) Submerged volume
Last Answer : (A) Own weight
Description : The buoyant force acting on a floating body is dependent on the (A) Viscosity of the liquid (B) Weight of the liquid displaced (C) Depth of immersion of the body (D) Surface tension of the liquid
Last Answer : (B) Weight of the liquid displaced
Description : Buoyant unit weight equals the saturated density (A) Multiplied by unit weight of water (B) Divided by unit weight of water (C) Plus unit weight of water (D) Minus unit weight of water
Description : What height of an ionized layer is determined from the time interval between the transmitted signal and the ionospheric echo at vertical incidence? A. Virtual height B. Apparent height C. Actual height D. Effective height
Last Answer : A. Virtual height
Description : The IFAC Code of Professional Conduct will ordinarily be considered to have been violated when the member represents that specific consulting services will be performed for a stated fee and it is apparent ... for comparable services. c. Fee was a competitive bid. d. Member would not be independent
Last Answer : Actual fee would be substantially higher
Description : When does apparent authority of an agent arise? a. When the acts with the usual authority of the job b. When the principal gives the agent implied authority to act c. When the agent has actual authority ... represents to a third party that an agent has the authority to act when in fact he doesn't
Last Answer : d. When the principal represents to a third party that an agent has the authority to act when in fact he doesn’t
Description : A certain number has three digits. The sum of the three digits equals 36 times this number. Seven times the left digit plus 9 is equal to 5 times the sum of the two other digits. 8 times the second digit minus 9 is equal to the sum of the first and third.What is the number? -Riddles
Last Answer : This one is fairly easy - 324 is the answer.
Description : If the equation x2 minus ax plus 2b equals 0 has prime roots where a and b are positive integers then a minus b is equal to?
Last Answer : I think you mean the roots are prime numbers.Let the two roots be primes p and qThen the equation factorises to (x - p)(x - q) = 0 which can beexpanded to give:x² - (p + q)x + pq = 0Which comparing ... = 2(It doesn't matter if the other prime is even (2) or not as itcancels out from a - b.)
Description : Gross profit is equal to 1. selling price minus purchase price 2. selling price minus purchase price plus depreciation 3. depreciation plus unsold stock minus purchase price 4. purchase price minus production cost 5. None of these
Last Answer : selling price minus purchase price
Description : The balance of payments of a country on current account is equal to A. Balance of trade plus short term B. Balance of trade plus net invisible exports C. Balance of payment minus capital flows
Last Answer : Balance of trade plus net invisible exports
Description : 5. Disposable Income is equal to: a. National Income c. National Income Minus Taxes b. Real GDP c. National Income Minus Taxes d. National Income Minus Taxes Plus Transfers
Last Answer : d. National Income Minus Taxes Plus Transfers
Description : The number of treads in a flight is equal to (A) Risers in the flight (B) Risers plus one (C) Risers minus one (D) None of these
Description : Gauge pressure at a point is equal to the absolute pressure __________ the atmospheric pressure. (A) Plus (B) Minus (C) Divide (D) Multiply
Description : The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch. (A) Plus (B) Minus (C) Divide (D) None of these
Last Answer : Answer: Option A
Description : Net capital employed is equal to --------------- a) Total assets minus liabilities b) Fixed asset plus net working capital c) Total asset minus long-term liabilities d) Total assets
Last Answer : b) Fixed asset plus net working capital
Description : The apparent weight of a person in a lift which is moving down with uniform acceleration is _______. (1) greater than the weight when the person is stationary (2) twice the weight when the person ... than the weight when the person is stationary (4) same as the weight when the person is stationary
Last Answer : (3) less than the weight when the person is stationary
Description : The apparent weight of a man in a lift is less the real weight when – (1) the lift is going up with an acceleration (2) the lift is going down with uniform speed (3) the lift is going up with uniform speed (4) the lift is going down with an acceleration
Last Answer : (4) the lift is going down with an acceleration Explanation: If the lift accelerates downwards with acceleration a, then the apparent weight of the man standing in the lift will be less than the ... upwards with acceleration, then the apparent weight of the man will be greater than his true weight.
Description : The apparent weight of a man in a lift is less the real weight when : (1) the lift is going up with an acceleration (2) the lift is going down with uniform speed (3) the lift is going up with uniform speed (4) the lift is going down with an acceleration
Last Answer : the lift is going down with an acceleration
Description : Which statement is true regarding the opposing forces acting on an aeroplane in steady-state level flight? a. Thrust is greater than drag and weight and lift are equal b. These forces are equal ... greater than weight d. Thrust is slightly greater than lift, but the drag and weight are equal
Last Answer : b. These forces are equal
Description : 11. If a body floating in a liquid does not return back to its original position and heels farther "away when given a small angular displacement, the body is said to be in neutral equilibrium. A) Yes B) No
Last Answer : B
Description : 06. A body floating in a liquid is said to be not in equilibrium if its metacentre lies below its centre of gravity. A) Agree B) Disagree