# Machine Dynamics MCQ Mechanical Engineering

50 Questions 30 Mins

The Fascinating World of Machine Dynamics: What You Need to Know

Have you ever wondered how machines work? What forces are at play when a machine moves? How can we optimize machine movement for efficiency and performance?

The answer to these questions lies in the fascinating world of machine dynamics

Machine dynamics is the study of how machines move and interact with their surroundings. It encompasses a wide range of topics, from the design and analysis of machinery to the control and operation of complex systems. machine dynamics is an interdisciplinary field that draws on principles from physics, engineering, and mathematics.

This is a critical tool for understanding and improving the performance of machines. It can be used to design more efficient machines, diagnose problems with existing machinery, and develop control systems that ensure safe and reliable operation This is an essential part of many industries, including transportation, manufacturing, construction, and energy production. A better understanding of machine dynamics can lead to improved safety, efficiency, and productivity in these industries.

Machine dynamics is a complex and fascinating field of study. If you're interested in learning more about machine dynamics, there are a few resources that can help you get started.

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

• lever
• pulley
• screw
• wedge

• 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

• 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
• velocity ratio

• 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

• 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

• KINEMATICS
• KINETICS
• STATIC
• DYNAMICS

• STATIC
• KINEMATICS
• KINETICS
• DYNAMICS

### 17. What 2 factors decrease population size?

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

• no
• yes

• yes
• no

• 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

• 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