1. What is the ratio of the ultimate failure to the yielding strain?
ANSWER: Ductility
2. The stress at which material exhibits a specified deviation from proportionality of stress and strain.
ANSWER: yield strength
3. “When the vector sum of the external forces acting on a system of particles equal to zero the total linear momentum of the system remains constant.” This statement is known as
ANSWER: Conservation of Linear Momentum
4. The _________ of a machine is the ratio of output force exerted and the input force furnished on it.
ANSWER: actual mechanical advantage
5. The ratio of input distance to output distance is known as ___________
ANSWER: ideal mechanical advantage
6. It is the change in kinetic energy plus the change in mechanical energy plus work done.
ANSWER: work energy theorem
7. What is the absolute value of the ratio of the transverse strain to the corresponding axial strain in a body subjected to uniaxial stress
ANSWER: Poisson’s Ratio
8. It is the ratio of the velocity of light in vacuum to the velocity of light in a medium
ANSWER: refractive index
9. Gravity is an example of what type of force?
ANSWER: Conservative force
10. Friction is an example of
ANSWER: Non-conservative force
11. The another term for conservative force
ANSWER: dissipative force
12. It is the ratio of velocity before and after an impact/ collision
ANSWER: coefficient of restitution
13. In __________ collision, kinetic energy is lost to heat, sound energy, etc.
ANSWER: Inelastic collision
14. What type of collision when maximum kinetic energy is lost?
ANSWER: Completely Inelastic Collision
15. Coefficient of restitution is the ratio of:
ANSWER: relative speed after collision to relative speed before collision
16. What is the coefficient of restitution for an elastic collision?
ANSWER: 1
17. What is the coefficient of restitution for an inelastic collision?
ANSWER: 0
18. The __________ of a body about a given axis is the rotational analog of mass of the body is distributed about the axis.
ANSWER: moment of inertia
19. The __________ of a rotational body is the product of its moment of inertia and angular speed.
ANSWER: angular momentum
20. When the forces that act on an object have a vector sum of zero, the object is said to be in __________ equilibrium.
ANSWER: translational
21. When the net torque acting on an object is zero, the object is in __________ equilibrium.
ANSWER: rotational
22. Maximum static friction is also known as
ANSWER: Starting friction
23. What is the another term of kinetic friction?
ANSWER: Sliding Friction
24. The coefficient of kinetic friction is ____________ the coefficient of static friction.
ANSWER: Always less than
25. The maximum displacement of an object undergoing harmonic motion on either side of its equilibrium position is called __________ of the motion.
ANSWER: Amplitude
26. In a __________, friction progressively reduces the amplitude of the vibrations
ANSWER: Damped Harmonic Oscillator
27. “When an object exerts a force on another object, the second object exerts the first force of the same magnitude but in opposite direction.” This statement is known as
ANSWER: Third Law of Motion
28. What occurs whenever a restoring force acts on a body in the opposite direction to its displacement from its equilibrium position with the magnitude of the restoring force proportional to the magnitude of the displacement?
ANSWER: Simple Harmonic Motion
29. What is doubled if the amplitude of a simple harmonic oscillator is doubled?
ANSWER: Its maximum speed
30. An object undergoes simple harmonic motion, its maximum speed occurs when its displacement from its equilibrium position is __________.
ANSWER: Zero
31. In a simple harmonic motion, there is always a constant ratio between the displacement of the mass and its ____________.
ANSWER: Acceleration
32. unit of momentum = kg-m /s
33. 1 slug = 14.6 kg
34. One pound is equal to __________ Newtons
ANSWER: 4.45
35. How many joules are there in 1 kilowatt-hour?
ANSWER: 3,600,000 Joules
36. Rest energy is the energy possessed by an object by virtue of its
ANSWER: mass
37. Potential energy is the energy possessed by an object by virtue of its
ANSWER: position
38. Work done on object = change of object’s KE + change in object’s PE and work done by the object. This equation is better known as
ANSWER: Work-energy Theorem
39. A net force applied to 1kg mass gives it an acceleration of 1 m/s2
ANSWER: Newton
40. What is the work done for a reversible isometric system?
ANSWER: zero
41. What are the thermodynamic properties?
ANSWER: temperature, pressure and volume
42. What is the mechanical equivalent of heat?
ANSWER: Joule
43. What are the thermodynamic properties?
ANSWER: temperature, pressure and volume
44. The average atmospheric pressure is __________ Torr. Torr was named after Torricelli, who made the barometer.
ANSWER: 760
45. In any process, the maximum amount of heat that can be converted into mechanical energy ___________.
ANSWER: depends on the intake and exhaust temperature
46. In any process, the maximum amount of mechanical energy that can be converted into heat is ___________.
ANSWER: 100%
47. Density is mass per unit volume.
48. It is the physical property of a material that refers to the rate of heat flow per unit time
ANSWER: thermal conductivity
49. It is the ratio of the amount of heat to raise the temperature of a unit mass of a substance to 1 degree to the heat required to raise the temperature of the same mass of water to 1 degree
ANSWER: specific heat
50. What is the compressibility factor of an ideal gas?
ANSWER: 1
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