/19 Applied Mechanics Civil Engineering Exam Preparation "Applied Mechanics" Subject Questions- Answers. 1 / 19 The concurrent forces P and Q (P > Q) acting along the same straight line, but in opposite direction, their resultant will be equal to (a) P + Q (b) P - Q (c) P/Q (d) Q/P 2 / 19 The resultant of two forces P and Q acting at an angle Θ is √(P²+Q²-2PQ sinΘ) √(P²+Q²+2PQ sinΘ) √(P²+Q²+2PQ cosΘ) √(P²+Q²-2PQ cosΘ) 3 / 19 1 MN =............. N? 10^12 (b) 10^9 (c) 10^6 (d) 10^3 4 / 19 Two forces of 6 kN and 8 kN act at right angles to each other, the resultant force will be (a) 10 kN (b) 14 kN (c) 28 kN (d) 100 kN 5 / 19 Which is not a vector quantity ? (a) Weight (b) Velocity (c) Momentum (d) Distance 6 / 19 The resultant of two forces acting at a point is maximum when angle between them,Θ is (a) 0° (b) 45° (c) 90° (d) 180° 7 / 19 When two forces each equal to P act at 90° to each other, then their resultant will be (a) √(2) P (b) 2P (c) 0.707 P (d) zero 8 / 19 The resultant of two equal forces P acting in opposite directions will be (a) 2P (b) (sqrt{P}) (c) 0.707 P (d) zero 9 / 19 A force which can produce an acceleration of 1 m/s² in a mass of 1 kg is called (a) 1 N (b) 1 kgf (c) 1 dyne (d) 1 watt 10 / 19 The resultant of two forces acting at a point is minimum when angle between them,Θ is (a) 0° (b) 45° (c) 90° (d) 180° 11 / 19 The component of a force (P) at right angles to its direction will be (a) Zero (b) P (c) P/2 (d) 2P 12 / 19 If resultant of two equal forces is equal to either of them, then angle between them is (a) 30° (b) 60° (c) 90° (d) 120° 13 / 19 Two forces of equal magnitude P act at an angle θ to each other. Their resultant is equal to (a) 2P sin(θ/2) (b) 2P cos(θ/2) (c) 2P cos θ (d) 2P cos 2θ 14 / 19 The unit of force in S.I. system is (a) Kilogram (b) Newton (c) Dyne (d) Watts 15 / 19 1 Joule is equal to (a) 1 N-m (b) 9.81 N-m (c) 1 kgf-m (d) None 16 / 19 If a number of forces are acting at a point, their resultant is given by (a) (ΣH)² + (ΣV)² (b) √((ΣH)² + (ΣV)²) (c) (ΣH)² + (ΣV)² + 2(ΣV)(ΣH) (d) √((ΣH)² + (ΣV)² + 2(ΣV)(ΣH)) 17 / 19 1 kgf = N (a) 8.91 (b) 10 (c) 9.81 (d) 12 18 / 19 Force is a (a) Scalar quantity (b) Vector quantity (c) linear quantity (d) Non-measurable quantity. 19 / 19 If P and Q are the two forces acting at an angle θ and their resultant makes an angle α with P, then (a) tan α = (Q sin θ)/(P + Q cos θ) (b) tan α = (Q sin θ)/(P + Q sin θ) (c) tan α = (Q sin θ)/(Q + P cos θ) (d) tan α = (P sin θ)/(Q + P cos θ) Your score is 0% Restart quiz