About Machine Dynamics

Following are some of the multiple choice questions on the Machine Dynamics with answers that will help the students in developing their knowledge.

Machine Dynamics MCQ

1. A door knob is an example of which machine?

  • wheel and axle
  • swrew
  • pulley 
  • inclined plane 

2. An inclined plane wrapped around a rod forms this simple machine

  • lever
  • pulley
  • screw
  • wedge 

3. A _______ is a rope or chain wrapped around a wheel.

  • wedge 
  • lever 
  • pulley 
  • screw

4. What is the equation for calculating work?

  • force times distance 
  • force divided by distance 
  • force plus distance 
  • mass times acceleration 

5. What are the units for work?

  • newtons
  • meters
  • force 
  • joules 

6. A flat sloping surface that connects lower and higher elevations. It makes raising objects easier.

  • wedge
  • screw
  • lever
  • inclined plane 

7. It is defined as an activity done when a body or object moves with the application of external force is ________.

  • Work
  • Energy
  • Mechanical Advantage
  • velocity ratio

8. The pair of two elements are not held together in mechanically it is called -----------.

  • lower pair
  • closed pair
  • open pair
  • higher pair

9. Which is an example of higher pair?

  • cylindrical pair
  • sliding pair
  • car mirror
  • cam and follower

10. Which is an example of rolling pair?

  • crankshaft
  • mirror in car
  • ball bearings
  • connecting rod

11. Cylindrical Pair has a---- degree of freedom.

  • one
  • two
  • three
  • four

12. If the relative motion between them is completely or successfully constrained then the pair is known as -------

  • rolling pair
  • kinematic pair
  • sliding pair
  • cylindrical pair

13. A---------- is again a combination of links connected to each other but no relative motion exists between them.

  • MACHINE
  • CONNECTING ROD
  • MECHANISM
  • STRUCTURE

14. ---------is a combination of rigid or restraining parts or bodies from which the machine is assembled.

  • MACHINE
  • STRUCTURE
  • MECHANISM
  • CONNECTING ROD

15. The branch of theory of machines that deals with forces and their effects while the machine parts are at rest.

  • KINEMATICS
  • KINETICS
  • STATIC
  • DYNAMICS

16. The branch of mechanics which deals with only motions and not with the forces

  • STATIC
  • KINEMATICS
  • KINETICS
  • DYNAMICS

17. What 2 factors decrease population size?

  • Immigration, Births
  • Emigration, Births
  • Emigration, Deaths
  • Immigration, Deaths

18. A girl pushes a box across the floor. Did she do work?

  • no
  • yes

19. Is work being done if I am trying to pick up a box but can not lift it?

  • yes
  • no

20. A 50 N block is lifted 10 m. How much work was done?

  • 50000 J
  • 5000 J
  • 500 J
  • 50 J

21. A seesaw is an example of which machine?

  • wedge
  • lever 
  • inclined plane 
  • pulley 

22. The "fixed point" on which a lever rests and, or pivots is known as which of the following?

  • screw
  • wheel and axle
  • see saw 
  • fulcrum 

23. A simple machine that consists a rigid bar that pivot about a fixed point

  • lever
  • pulley
  • wheel and axle
  • fulcrum 

24. What is a simple machine?

  • a device that has only one working motor
  • a device that makes work easier
  • a device that makes more work for a job
  • device that is made up of two or more machines

25. Diseases may spread more rapidly when an area is crowded, so disease is considered to be a

  • type I survivorship curve
  • population crasher
  • density-dependent limiting factor
  • population enhancer

26. What pattern of growth will a population with limited resources show?

  • density-dependent
  • exponential 
  • logistic
  • logical 

27. The movement of a single caribou into a herd is an example of

  • population
  • immigration
  • emigration
  • predation

28. The way in which individuals of a population are spread out is called

  • population density
  • survivorship
  • population dispersion
  • logistic curve

29. Which of the following is a density-independent limiting factor?

  • natural disaster
  • predation
  • disease
  • parasitism

30. Which of the following statements about primary succession is true?

  • It begins with a climax community
  • Small mammals are the first to live there
  • It begins with bare rock
  • It begins with rock and soil

31. Which of the following is a density-dependent limiting factor?

  • human activities 
  • unusual weather
  • competition
  • natural disaster

32. To measure population density, you must divide the number of individuals living in a defined space by the

  • area of the space
  • birth and death rates
  • carrying capacity
  • height of the space

33. Which of the following will increase the size of a population?

  • emigration and births
  • immigration and deaths
  • immigration and births
  • emigration and deaths

34. Nesting birds often space themselves evenly from other nests. This pattern is called

  • clumped dispersion.
  • uniform dispersion.
  • random dispersion
  • scatter dispersion

Enjoyed the Quiz. Share this with friends

Comments

Add Your Review

Your email address will not be published.

Subscribe to Newsletter!

Subscribe to get latest updates and information.