Description : When two forces acting at a point are such that if the direction of one is reversed, the direction of the resultant is turned through a right angle, the forces must be a.inclined at more than 90? b.inclined at less than 90? c.equal in magnitude d.acting at 180? e.107 dynes
Last Answer : c. equal in magnitude
Description : When two concurrent and coplaner forces P and Q act at an angle of 180?, their resultant will be a a.moment equal to PQ b.couple c.(P-Q) d.107 dynes e.zero
Last Answer : c. (P-Q)
Description : The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to
Last Answer : The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to the algebraic sum of the resolved parts of the forces in the given direction.
Description : If two equal forces of magnitude P act at an angle 9°, their resultant will be
Last Answer : If two equal forces of magnitude P act at an angle 9°, their resultant will be IP cos 9/2.
Description : In case forces of 1 N, 2 N, 3 N, 4 N, 5 N and 6 N act in order along the sides of a regular hexagon, the resultant will be a.21 N b.107 dynes c.2 N d.6 N e.
Last Answer : d. 6 N
Description : The resultant of two forces 10 N and 15 N acting along + x and – x-axes respectively, is
Last Answer : The resultant of two forces 10 N and 15 N acting along + x and - x-axes respectively, is (A) 25 N along ... along + x-axis (D) 5 N along - x-axis
Description : Two forces, F1 and F2, each of magnitude 5 N are inclined to each other at 60°. Find the magnitude and direction of their resultant force.
Last Answer : Two forces, F1 and F2, each of magnitude 5 N are inclined to each other at 60°. Find the magnitude and direction of their resultant force.
Description : Two forces of 6 and 8 kg act at right angles to each other, the resultant force will be a.100 b.28 c.41 d.14 e.10
Last Answer : e. 10
Description : According to principle of moments (A) If a system of coplanar forces is in equilibrium, then their algebraic sum is zero (B) If a system of coplanar forces is in equilibrium, then the ... of their resultant about the same point (D) Positive and negative couples can be balanced
Last Answer : (C) The algebraic sum of the moments of any two forces about any point is equal to moment of their resultant about the same point
Description : The statement --- if forces acting on a point can be represented in magnitude and direction by the sides of a polygon taken in order then their resultant will be represented in magnitude and direction by the closing ... 's law of forces c.Law of polygon of forces d.D'Alembert's rule e.Lami's theorem
Last Answer : c. Law of polygon of forces
Description : The statement the resultant of the external forces applied to a body (rigid or non-rigid) composed of a system of particles is equivalent to the vector summation of the effective forces acting on all ... motion b.Principle of dynamics c.D' Alembert's principle d.Nowton's law e.Mohr's principle
Last Answer : c. D' Alembert's principle
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 : The resultant of coplaner parallel forces is found by load line diagram, while the position is found by a.link polygen b.funicular polygon c.string polygon d.any of the above e.107 dynes
Last Answer : d. any of the above
Description : Combined effect of several forces is known as A. net force B. resultant force C. normal force D. weight
Last Answer : resultant force
Description : The product of either force of couple with the arm of the couple is called (A) Resultant couple (B) Moment of the forces (C) Resulting couple (D) Moment of the couple
Last Answer : (D) Moment of the couple
Description : The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of (A) Forces (B) Independence of forces (C) Dependence of forces (D) Resolution of forces
Last Answer : (D) Resolution of forces
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 : 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 : The resultant of two vectors of magnitude |P| is also |P|. They act at an angle
Last Answer : The resultant of two vectors of magnitude |P| is also |P|. They act at an angle (A) 60° (B) 90° (C) 120° (D) 180°
Description : If the resultant vector forms an angle of 45°, then the two components are A. parallel to each other B. perpendicular to each other C. anti parallel to each other D. anti perpendicular to each other
Last Answer : perpendicular to each other
Description : The angle of friction is a.The angle which frictional force makes with the normal b.The anle at which the force applied from external souce will cause movement c.The angle at which fictional ... the normal reaction and the resultant of normal reaction and the limiting friction e.None of the above
Last Answer : d. The angle between the normal reaction and the resultant of normal reaction and the limiting friction
Description : The coefficient of friction is a.The tangent of the angle between the normal reaction and direction of limiting friction b.The tangent of the angle between the normal reaction and the resultant ... e.The angle between the normal reaction and the resultant of normal reaction and the limiting friction
Last Answer : a. The tangent of the angle between the normal reaction and direction of limiting friction
Description : Angle of obliquity is defined as a. Angle between the plane on which stresses are evaluated and one of the given planes b. Angle between resultant stress and the plane of given normal stress c. Angle between resultant stress and shear stress d. Angle between resultant stress and normal stress
Last Answer : d. Angle between resultant stress and normal stress
Description : The angle of obliquity is the angle between the a. Firstly Resultant and the shear stress b. Secondly Resultant & the normal stress c. Both (a) & (b) d. None
Last Answer : b. Secondly Resultant & the normal stress
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 : A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant ... inclined to the horizontal at an angle of (A) 7° (B) 10° (C) 12° (D) 17
Last Answer : (C) 12°
Description : What is the device, which depends on the action of a movalbe permanent magnet, in aligning itself in the resultant field produced by a fixed permanent magnet or current- carrying coils whose axes are displaced by a fixed angle?
Last Answer : moving-magnet instrument
Description : If weight of a falling tennis ball is 1.0 N and drag force acting on it is 0.2 N then resultant force is A. 0.8 N B. 0.5 N C. 1 N D. 2 N
Last Answer : 0.8 N
Description : A force of 60 N acting perpendicular to a force of 80 N, magnitude of resultant force is
Last Answer : A force of 60 N acting perpendicular to a force of 80 N, magnitude of resultant force is (A) 20N (B) 70N (C) 100 N (D) 140 N
Description : Acceleration of a rocket having mass 5000 kg and resultant force acting on it is 200,000 N is A. 50 m s-2 B. 56 m s-2 C. 70 m s-2 D. 40 m s-2
Last Answer : . 40 m s-2
Description : The statement ---- if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two ---- is known as a.Law of polygon of forces b.D'Alembert's principle c.Newtons law of forces d.Lami's theorem e.Law of triangle of forces
Last Answer : d. Lami's theorem
Description : A member is balanced at its end by two inclined members carrying equal forces. For equilibrium the angle between the inclined bars must be (A) 3° (B) 45° (C) 90° (D) 120°
Last Answer : (D) 120°
Description : According to law of triangle of forces (A) Three forces acting at a point will be in equilibrium (B) Three forces acting at a point can be represented by a triangle, each side ... point are in equilibrium, each force is proportional to the sine of the angle between the other two
Last Answer : (C) If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
Description : According to Lami's theorem (A) Three forces acting at a point will be in equilibrium (B) Three forces acting at a point can be represented by a triangle, each side being proportional to ... point are in equilibrium, each force is proportional to the sine of the angle between the other two
Last Answer : Answer: Option D
Description : At low Reynold's number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5 : Power number Re = ρ N D2 ... Re -1.0 (B) Po ∝ Re 0.0 (C) Po ∝ Re 0.5 (D) Po ∝ Re 1.0
Last Answer : (B) Po ∝ Re 0.0 (C) Po ∝ Re 0.5
Description : Two resistance wires on joining in parallel the resultant resistance is ohms `(6)/(5)` ohms. One of the wire breaks, the effective resistance is 2 ohm
Last Answer : Two resistance wires on joining in parallel the resultant resistance is ohms `(6)/(5)` ohms. One of the wire ... ` C. `(6)/(5)Omega` D. `3Omega`
Description : Three forces A, B and C of magnitudes 8 N, 12 N and 20 N acting on a particle are in equilibrim. It can be concluded that a.107 dynes b.B and C act in opposite directions c.one of the forces in non-coplaner d.A and B act at 90? e.one of the forces is non-concurrent
Last Answer : b. B and C act in opposite directions
Description : In above problem the resultant reaction between the cannon and the ground would be a.1146 tonnes b.573 tonnes c.286.5 tonnes d.50 tonnes e.145 tonnes
Last Answer : b. 573 tonnes
Description : Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. ... from 1 kg fresh juice is (A) 0.4 (B) 0.5 (C) 0.6 (D) 0.7
Last Answer : (D) 0.7
Description : The resultant electric field of a wave with Ex = 3 and Ey = 4 will be a) 7 b) 1 c) 25 d) 5
Last Answer : d) 5
Description : The resultant of the following three couples 20 kg force, 0.5 m arm, +ve sense 30 kg force, 1 m arm, -ve sense 40 kg force, 0.25 m arm, +ve sense having arm of 0.5 m will be (A) 20 kg, -ve sense (B) 20 kg, +ve sense (C) 10 kg, +ve sense (D) 10 kg, -ve sense
Last Answer : (A) 20 kg, -ve sense
Description : To have pressure wholly compressive under the base of a retaining wall of width b, the resultant of the weight of the wall and the pressure exerted by the retained, earth should have eccentricity not more than (A) b/3 (B) b/4 (C) b/5 (D) b/6
Description : If the numerator of a fraction is increased by 300% and the denominator of the fraction is increased by 150%, the resultant fraction is 3/5. What is the original fraction? a) 7/5 b) 3/7 c) 7/15 d) 1/6 e) None of these
Last Answer : x + 300% of x / y +150% of y = 3/5 400x/250y = 3/5 x/y = 3 × 250 /5 × 400 x/y = 3/8 Answer: e)
Description : A rectangular tank 10 m x 5 m in plan and 3 m deep is divided by a partition wall parallel to the shorter wall of the tank. One of the compartments contains water to a depth of 3 m, and the other a lighter ... pressure thrust on the partition wall is (a) 1000 kg (b) 1500 kg (c) 2000 kg (d) 2500 kg
Last Answer : Correct Answer is 15000 kg
Description : Explain, how two vectors are subtracted. Find their resultant by using triangle law of vector addition.
Last Answer : Explain, how two vectors are subtracted. Find their resultant by using triangle law of vector addition.
Description : How can resultant of two vectors of a type inclined with each other be determined?
Last Answer : How can resultant of two vectors of a type inclined with each other be determined?
Description : Whether the resultant of two vectors of unequal magnitude be zero?
Last Answer : Whether the resultant of two vectors of unequal magnitude be zero?