Description : The center of pressure of a surface subjected to fluid pressure is the point (A) On the surface at which resultant pressure acts (B) On the surface at which gravitational force acts (C) At which all hydraulic forces meet (D) Similar to metacentre
Last Answer : Answer: Option A
Description : Center of percussion is (A) The point of C.G. (B) The point of metacentre (C) The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis (D) Point of suspension
Last Answer : (C) The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
Description : Resultant pressure of the liquid in the case of an immersed body acts through (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy
Last Answer : Answer: Option B
Description : For a body floating in a liquid the normal pressure exerted by the liquid acts at A) Bottom surface of the body (B) C.G. of the body (C) Metacentre (D) All points on the surface of the body
Last Answer : Answer: Option D
Description : In a solid arch, shear force acts (A) Vertically upwards (B) Along the axis of the arch (C) Perpendicular to the axis of arch (D) Tangentially to the arch
Last Answer : (C) Perpendicular to the axis of arch
Description : When a body floating in a liquid, is displaced slightly, it oscillates about (A) C.G. of body (B) Center of pressure (C) Center of buoyancy (D) Metacentre
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
Last Answer : Answer: Option C
Description : A body floats in stable equilibrium (A) When its meatcentric height is zero (B) When the metacentre is above e.g. (C) When its e.g. is below its center of buoyancy (D) Metacentre has nothing to do with position of e.g. for determining stability
Description : Metacentre is the point of intersection of (A) Vertical upward force through e.g. of body and center line of body (B) Buoyant force and the center line of body (C) Midpoint between e.g. and center of buoyancy (D) All of the above
Description : The line of action of the buoyant force acts through the (A) Centroid of the volume of fluid vertically above the body (B) Centre of the volume of floating body (C) Center of gravity of any submerged body (D) Centroid of the displaced volume of fluid
Description : The center of gravity of the volume of the liquid displaced by an immersed body is called (A) Metacentre (B) Center of pressure (C) Center of buoyancy (D) Center of gravity
Description : Metacentric height is given as the distance between (A) The center of gravity of the body and the metacentre (B) The center of gravity of the body and the center of buoyancy (C) The center of gravity of the body and the center of pressure (D) Center of buoyancy and metacentre
Description : When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures. (A) Sum (B) Difference (C) Arithmetic mean (D) Geometric mean
Description : The centre of percussions is a.The point of application of the resultant of all the forces tending to cause a body to rotate about a central axis b.The point of application of the resultant ... .The point in a body about which it can rotate horizontally and oscillates under the influence of gravity
Last Answer : a. The point of application of the resultant of all the forces tending to cause a body to rotate about a central axis
Description : Center of pressure on an inclined plane is (A) At the Centroid (B) Above the Centroid (C) Below the Centroid (D) At metacentre
Description : Metacentric height is the distance between the metacentre and (A) Water surface (B) Center of pressure (C) Center of gravity (D) Center of buoyancy
Description : The conditions for the stable equilibrium of a floating body are (A) The metacentre should lie above the center of gravity (B) The center of buoyancy and the center of gravity must lie on the same vertical line (C) A righting couple should be formed (D) All the above are correct
Description : For a floating body to be in stable equilibrium, its metacentre should be (A) Below the center of gravity (B) Below the center of buoyancy (C) Above the center of buoyancy (D) Above the center of gravity
Description : The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as (A) Meta center (B) Center of pressure (C) Center of buoyancy (D) Center of gravity
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
Description : A bullet is fired vertically upwards with a velocity of 2200 ft/s. Bullet ascends to a height of a.56,900 ft b.107 dynes c.75,000 ft d.48.300 ft e.65,800 ft
Last Answer : c. 75,000 ft
Description : A stone of wight 100 kg is thrown vertically upwards by a man of height y = 1.8 m with an initial velocity of 20 m/sec. The maximum height to which it will rise would be a.22.2 m b.26 m c.15.1 m d.20.2 m e.10 m
Last Answer : a. 22.2 m
Description : A ball weighing 250 gm is thrown vertically upwards with a velocity of 980 cm/sec. The time that the ball will take to return back to earth would be a.1 sec b.4 sec c.2 sec d.5 sec e.3 sec
Last Answer : c. 2 sec
Description : A stone is thrown vertically upwards from the ground with a velocity 15 m/s. At the same instant a ball is dropped from a point directly
Last Answer : A stone is thrown vertically upwards from the ground with a velocity 15 m/s. At the same instant a ball ... Use g = 10 m/s2 for ease of calculation).
Description : A ball thrown vertically upwards from a point P on earth reaches a point Q and returns back to earth striking at a point R.
Last Answer : A ball thrown vertically upwards from a point P on earth reaches a point Q and returns back to ... the motion of the ball (Neglect air resistance).
Description : A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground ... : 1 (2) 1 : 2 (3) 1 : 4 (4) Cannot be found from the given information.
Last Answer : (1) 1 : 1 Explanation: The stone which is throws upward will have the same velocity of u at the point of its original position when it is falling down. Another stone is thrown downwards with u. So ... will hit the ground with same velocity. So the ratio between the speeds of two stones will be 1:1
Description : A ball is thrown vertically upwards from the ground with a speed of 80 feet/second. In the English system of units, what is the magnitude and direction of the acceleration of the ball?
Last Answer : ANSWER: 32 FEET PER SECOND SQUARED DOWN or TOWARDS THE EARTH
Last Answer : 1 : 1
Description : The location of centre of pressure, which defines the point of application of the total pressure force on the surface, can be calculated by applying the principle of moments according to which "sum of the moment of the resultant force about an ... liquid) (A) 1/(y/3) (B) 2y/3 (C) 1/(y/4) (D) 3y/4
Last Answer : (B) 2y/3
Description : According to principle of transmissibility of forces, the effect of a force upon a body is (A) Maximum when it acts at the center of gravity of a body (B) Different at different points in its line of action ... at every point in its line of action (D) Minimum when it acts at the C.G. of the body
Last Answer : (C) The same at every point in its line of action
Description : The point at which the resultant pressure on an immersed surface acts, is known as (A) Centre of gravity (B) Centre of depth (C) Centre of pressure (D) Centre of immersed surface
Description : Choose the wrong statement (A) The horizontal component of the hydrostatic force on any surface is equal to the normal force on the vertical projection of the surface (B) The horizontal component ... above the area (D) The vertical component passes through the center of pressure of the volume
Description : The line of action of the buoyant force acts through the Centroid of the (A) Submerged body (B) Volume of the floating body (C) Volume of the fluid vertically above the body (D) Displaced volume of the fluid
Description : When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as (A) Centre of pressure (B) Centre of gravity (C) Centre of buoyancy (D) Metacentre
Description : The centre of gravity of the volume of the liquid displaced by an immersed body is called (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy
Description : A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to-----? A. Prop him up if he falls B. Spread out his weight and reduce the ... keep the rope tightly stretched D. To keep the Center of gravity always above vertically above the rope (Answer)
Last Answer : D. To keep the Center of gravity always above vertically above the rope (Answer)
Description : For an unstable equilibrium of a floating body (where, M = metacentre.) (A) M is above G (B) M is below G (C) M & G coincide (D) None of these
Last Answer : (B) M is below G
Description : A rocket is fired vertically from the ground with a resultant vertical acceleration of 10 m/sec the fuel is finished in one minute and it continues to move up. The maximum height reached will be a.2 km b.20 km c.36 km d.10 km e.80 km
Last Answer : a. 2 km
Description : A body is said to be in equilibrium if (A) It moves horizontally (B) It moves vertically (C) It rotates about its C.G. (D) None of these
Last Answer : (D) None of these
Description : Coefficient of friction is the (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The ... body is just about to move (D) The friction force acting when the body is in motion
Last Answer : (B) Ratio of limiting friction and normal reaction
Description : Kinetic friction is the (A) Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The friction force ... body is just about to move (D) The friction force acting when the body is in motion
Last Answer : (D) The friction force acting when the body is in motion
Description : Limiting force of friction is the (A) Tangent of angle between normal reaction and the resultant of normal reaction and limiting friction (B) Ratio of limiting friction and normal reaction (C) The friction ... body is just about to move (D) The friction force acting when the body is in motion
Last Answer : (C) The friction force acting when the body is just about to move
Description : Angle of friction is the (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The ratio of minimum ... (D) The ratio of minimum friction force to friction force acting when the body is in motion
Last Answer : (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction
Description : Pick out the wrong statement: (A) The vacuum pressure is always the negative gauge pressure (B) The pressure of the liquid measured by a piezometer tube is the gauge pressure (C) Manometric ... point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity
Last Answer : (D) The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity
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
Last Answer : A
Description : 04. A body floating in a liquid is said to be in a stable equilibrium, if its metacentre coincides with its centre of gravity. A) True B) False
Last Answer : B
Description : The meatcentric height is the distance between the (A) Centre of gravity of the floating body and the centre of buoyancy (B) Centre of gravity of the floating body and the metacentre (C) Metacentre and centre of buoyancy (D) Original centre of buoyancy and new centre of buoyancy
Description : A body floating in a liquid is said to be in neutral equilibrium, if its metacentre (A) Coincides with its centre of gravity (B) Lies above its centre of gravity C) Lies below its centre of gravity (D) Lies between the centre of buoyancy and centre of gravity
Description : Center of pressure compared to e.g. is (A) Above it (B) Below it (C) At same point (D) Above or below depending on area of body
Description : Which of the following statement(s) is/are true concerning CO2 transfer in the lung? a. Carbon dioxide excretion is a direct function of alveolar ventilation b. Normally end tidal ... d. Positive pressure ventilation under normal airway pressures creates a significant end tidal PaCO2 gradient
Last Answer : Answer: a, b, c The amount of carbon dioxide excretion is directly related to alveolar ventilation. While oxygenation is a function of matching blood flow to alveoli, carbon dioxide excretion is ... high (over 30 cm H2O) and the compression volume is a significant component of each exhaled breath