Applied Mechanics and Graphic Statics

101. Coefficient of friction depends on

1. Nature of surfaces only
2. Area of contact only
3. Both (A) and (B)
4. None of the above

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102. Effect of a force on a body depends upon its

1. Direction
2. Magnitude
3. Position
4. All the above

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103. Energy may be defined as

1. Power of doing work
2. Capacity of doing work
3. Rate of doing work
4. All the above

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104. Engineer's units of force, is

1. Newton in absolute units
2. Dyne in absolute units
3. Newton and dyne in absolute units
4. All the above

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105. Equation of motion of a point in a straight line, is

1. v = u + ft
2. S = ut + ½ ft²
3. 2fS = v² - u²
4. All the above

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106. For a body moving with simple harmonic motion, the number of cycles per second, is known as its

1. Oscillation
2. Amplitude
3. Periodic time
4. Frequency

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107. For a given velocity of a projectile, the range is maximum when the angle of projection is

1. 30°
2. 45°
3. 90°
4. 0°

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108. For a non-concurrent force system to be in equilibrium

1. Only the closure of force polygon is sufficient
2. Only the closure of funicular polygon is sufficient
3. Both force polygon and funicular polygon must close
4. None of the above

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109. For a particle moving with a simple harmonic motion, the frequency is

1. Directly proportional to periodic time
2. Inversely proportional to periodic time
3. Inversely proportional to its angular velocity
4. Directly proportional to its angular velocity

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110. For a self-locking machine, the efficiency should be

1. Less than 60%
2. 0.5
3. More than 50%
4. None of these

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