Applied Mechanics MCQs (Civil Engineering)
Applied Mechanics MCQs (Civil Engineering)
These Applied Mechanics multiple-choice questions and their answers will help you strengthen your grip on the subject of Applied Mechanics. You can prepare for an upcoming exam or job interview with these Applied Mechanics MCQs.
So scroll down and start answering.
1: A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60° with horizontal, is
A. 100 kg
B. 60 kg
C. 40 kg
D. 10 kg
2: A particle moves along a straight line such that distance x traversed in t seconds is given by x = t2(t + 1), the acceleration of the particle, will be
A. 6t - 2
B. 3t2 + 2t
C. 6t + 2
D. 3t3 - 2t
E. 3t - 2
3: The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is , the velocities of separation of the balls will be equal to
A. Original velocity in the same direction
B. Half the original velocity in the same direction
C. Half the original velocity in the opposite direction
D. Original velocity in the opposite direction
4: Joule is the unit of
A. Work
B. None of these
C. Force
D. Torque
E. Power
5: A Seconds pendulum executes
A. 3 beats per second
B. 2.5 beats per second
C. 1.0 beat per second
D. 2.0 beats per second
E. 0.5 beat per second
6: The forces which meet at one point and have their lines of action in different planes are called
A. Non-coplaner non-current forces
B. None of these
C. Intersecting forces
D. Non-coplaner concurrent forces
E. Coplaner non-concurrent forces
7: Which one of the following laws is not applicable to a simple pendulum?
A. The time period is proportional to its length l
B. The time period is inversely proportional to g where g is the acceleration due to gravity
C. The time period is proportional to l where l is length
D. The time period does not depend on its magnitude
8: The Law of Polygon of Forces states that
A. If a polygen representing the forces acting at point in a body is closed, the forces are in equilibrium
B. If forces acting on a point can be represented of a polygon taken in order, their sides of a polygon taken in order, their resultant will be represented in magnitude and direction by the closing side of the polygon, taken in opposite order
C. If forces acting on a point can be represented in magnitude and direction by the sides of a polygon in order, the forces are in equilibrium
D. If forces acting on a point can be represented in magnitde and direction by the sides of a polygon taken in order, then the resultant of the forces will be represented in magnitude and direction by the closing side of the polygon
9: The maximum velocity of a body vibrating with a simple harmonic motion of amplitude 150 mm and frequency 2 vibrations/sec, is
A. 0.18845 m/sec
B. 188.5 m/sec
C. 18.85 m/sec
D. 1.885 m/sec
10: The equation of motion of a particle starting from rest along a straight line is x = t3 - 3t2 + 5. The ratio of the accelerations after 5 sec and 3 sec will be
A. 3
B. 2
C. 4
D. 5
11: The locus of the instantaneous centre of a moving rigid body, is
A. Involute
B. Straight line
C. Centroid
D. Spiral
12: The C.G. of a right circular cone lies on its axis of symmetry at a height of
A. H/3
B. H/6
C. H/5
D. H/2
E. H/4
13: If the radius of the earth is 600 km the height of a mountain above sea level at the top of which a beat seconds pendulum at sea level, looses 27 seconds a day, is
A. 1500 metres
B. 500 metres
C. 2000 metres
D. 25000 metres
E. 1000 metres
14: A satellite moves in its orbit around the earth due to
A. Centrifugal force
B. Centripetal force
C. Gravitational force
D. None of these
15: The unit of Moment of Inertia of a body, is
A. M3
B. M4
C. None of these
D. M
E. M2
16: Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is
A. 40 kg
B. 30 kg
C. 35 kg
D. 25 kg
E. 20 kg
17: A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be
A. 2.5 m/sec
B. 1.5 m/sec
C. 0.5 m/sec
D. 4.5 m/sec
E. 3.5 m/sec
18: Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by
A. The diagonal of the parallelogram which does not pass through the point of intersection of the forces"
B. The diagonal of the parallelogram which passes through the point of intersection of the forces"
C. Its longer side"
D. Its shorter side"
E. Half the sum of the diagonals"
19: The total time of collision and restitution of two bodies, is called
A. Period of impact
B. Period of collision
C. All these
D. Time of collision
20: A bullet weighing 200 g is fired horizontally with a velocity of 25 m/sec from a gun carried on a carriage which together with the gun weighs 100 kg. The velocity of recoil of the gun, will be
A. 0.05 m/sec
B. 1.00 m/sec
C. 1.5 m/see
D. 0.01 m/sec
21: What discipline is concerned with the motion of any substance that can be experienced or perceived by humans without the help of instruments?
A. Mathematics
B. Physics
C. Geology
D. Applied Mechanics
E. Chemistry
22: What does statistics deal with?
A. The motion and behaviour of particles in a gas
B. The nature and behaviour of waves
C. The equilibrium of a system of fluids
D. The movement of objects in a static environment
E. Forces operating on and in a body at rest
23: What is a field of study that describes the possible motions of a body or system without evaluating the force of motion?
A. Statics
B. Kinematics
C. Dynamics
D. Thermodynamics
24: What discipline described the effect of forces acting over a system performing the motion?
A. Mechanics
B. Kinetics
C. Thermodynamics
D. Aerodynamics
25: What does the mass of an object also help identify?
A. The temperature of the object
B. The temperature at which the object is hottest
C. The shape of the object
D. The strength of the object's gravitational attraction to other bodies
E. The speed at which the object is moving
26: What is the UNIT used for the measurement of mass?
A. Penny
B. Litre
C. Kilogram
D. Gram
27: What is referred to as the minimum length between the body's initial to the final location?
A. Velocity
B. Displacement
C. Tension
D. Movement
28: What is expressed as a term that gives a fractional relation of change in the object's position concerning a reference frame with time?
A. Angular momentum
B. Moment of inertia
C. Velocity
D. Acceleration
E. Position
29: What is the second derivative of displacement concerning time called?
A. Velocity
B. Impulse
C. Acceleration
D. Jerk
E. Magnitude
30: What term is used for a negative magnitude of acceleration?
A. Magnitude
B. Acceleration
C. Deceleration
D. Velocity
31: What is the momentum of a system identified?
A. A product of its mass and velocity
B. Strength of the gravitational force
C. The product of its mass and velocity squared
D. The sum of its mass and velocity
E. A vector quantity
32: What can change the state of an object?
A. Speed
B. A force
C. Time
D. Temperature
33: If a force has both magnitude and direction, what is it called?
A. A displacement vector
B. A force field
C. A magnitude
D. A force
E. A vector quantity
34: In a lifting machine with an efficiency of 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is
A. 30
B. 50
C. 60
D. 80
35: A heavy ladder resting on the floor and against a vertical wall may not be in equilibrium if
A. The floor is smooth and the wall is rough
B. The floor is rough and the wall is smooth
C. Both floor and wall are rough
D. Both floor and wall are smooth
36: When a circular wheel rolls on a straight track, then the shape of the body centrode and space
A. Centrode respectively are
B. Straight line and parabola
C. Straight line and circle
D. Circle and straight line
E. Circle and parabola
37: The time period of a simple pendulum depends on
A. Mass of suspended particle
B. Length of the pendulum
C. Acceleration due to gravity
D. Both b and c
38: A light rope is loaded with many equal weights at equal horizontal intervals. The points of suspension on the rope lie on a
A. Parabola
B. Catenary
C. Cycloid
D. Ellipse
39: If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is
A. Zero
B. Maximum
C. Minimum
D. None of these
40: A particle executes a simple harmonic motion. While passing through the mean position, the particle possesses
A. Maximum kinetic energy and minimum potential energy
B. Maximum kinetic energy and maximum potential energy
C. Minimum kinetic energy and maximum potential energy
D. Minimum kinetic, energy and minimum potential energy
41: The tension in a cable supporting a lift
A. Is more when the lift is moving downwards
B. Is less when the lift is moving upwards
C. Remains constant whether its moves downwards or upwards
D. Is less when the lift is moving downwards
42: The shape of a suspended cable under its own weight is
A. Parabolic
B. Circular
C. Catenary
D. Elliptical
43: The inherent property of a body that offers reluctance to change its state of rest or uniform
A. Motion is
B. Weight
C. Mass
D. Inertia
E. Momentum
44: A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete
A. Vibration is 1 sec, then the maximum velocity of the particle is
B. 1.00 m/sec
C. 1.57 m/sec
D. 3.14 m/sec
E. 6.28 m/sec
45: Three forces act on a rigid body to keep it in equilibrium. The forces must be coplanar and
A. Concurrent
B. Parallel
C. Concurrent parallel
D. None of these
46: The coefficient of friction depends on
A. Nature of surfaces only
B. Area of contact only
C. Both and
D. None of the above
47: The maximum pull in a cable, carrying a uniformly distributed load and supported at two ends that are at the same level, is at
A. Supports
B. Quarter span
C. Midspan
D. None of the above
48: A stone is whirled in a vertical circle, and the tension in the string is maximum
A. When the string is horizontal
B. When the stone is at the highest position
C. When the stone is at the lowest position
D. At all the positions
49: At a given instant the ship is travelling at 6 km/h due east and the ship is travelling at 8 km/h due north. The velocity relative to is
A. 7 km/hrs
B. 2 km/hrs
C. 1 km/hrs
D. 10 km/hrs
50: The ratio of the moment of inertia of a rectangle about its centroidal axis to the moment of inertia about its base is
A. 1/4
B. 1/2
C. 3/4
D. 2
List of Applied Mechanics MCQs...
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Applied Mechanics MCQs (Civil Engineering)
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Domande di Meccanica Applicata in lingua italiana
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Fragen zur Angewandten Mechanik in deutschen Sprachen
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أسئلة ميكانيكا تطبيقية باللغات العربية
Soal-soal Mekanika Terapan dalam bahasa Indonesia
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