Question 1

Reciprocal motion is back and forth rotational motion.

Accepted Answer

Reciprocal motion is actually back and forth linear motion, not rotational.

Question 2

Kinetics studies the action of forces on bodies.

Accepted Answer

Kinetics is a branch of mechanics that studies the motion of bodies under the action of forces. Therefore, it deals with the study of forces on bodies.

Question 3

The ____________________ and slider mechanism is used to change between rotary and reciprocating motions.

Accepted Answer

crank

Question 4

A clock pendulum and the agitator of a top-loading washing machine move with a(n)____ motion.

Accepted Answer

A clock pendulum and the agitator of a top-loading washing machine move with an oscillating motion, which is characterized by repetitive back and forth motion around a central point or position. Linear motion involves movement in a straight line, reciprocal motion involves movement forward and backward in a recurring cycle, and rotary motion involves circular movement around a central axis.

Question 5

____________________ are toothed wheels fixed to an axle.

Accepted Answer

The answer of ____________________ are toothed wheels fixed to an...

Question 6

The Greek letter ____ is used to represent an angle measurement.

Accepted Answer

The Greek letter theta (θ) is commonly used to represent an angle measurement in mathematics and physics. Alpha (α) and beta (β) are also Greek letters commonly used in mathematics, but they are more often used to represent variables or constants. Sigma (σ) is typically used to represent a summation in mathematics.

Question 7

A(n)____________________ is a rigid body that is capable of transforming energy to provide a designed motion and force.

Accepted Answer

The answer of A(n)____________________ is a rigid body that is...

Question 8

A mechanical advantage greater than 1 (MA > 1)means that a gain in output force has been achieved by an increase in input motion.

Accepted Answer

A mechanical advantage greater than 1 means that the output force is greater than the input force, resulting in a gain in force.

Question 9

The rack and pinion gear system changes a rotary input motion to a(n)____ output motion.

Accepted Answer

The rack and pinion gear system works by converting rotational motion into linear motion. The pinion gear, which is the smaller gear, rotates and engages with teeth on the rack, which is the linear gear. As the pinion gear rotates, it moves the rack back and forth in a straight line, producing linear motion.

Question 10

The ____ cam,a circular disk with the axle placed off-center,gives a smooth,harmonic,linear output motion to the follower.

Accepted Answer

An eccentric cam has a circular disk with the axle placed off-center, which results in a smooth, harmonic, linear output motion to the follower. A pear-shaped cam has a more complex shape and does not necessarily provide a smooth linear motion. A roller cam uses a cylindrical or spherical roller instead of a follower and does not have the same off-center design as an eccentric cam. A twin cam is a type of engine design and is not related to cams with an off-center axle.

Question 11

____ is a force applied over a distance that overcomes some resistance as noted in Newton's laws.

Accepted Answer

According to Newton's laws, work is defined as a force applied over a distance, which overcomes some resistance. Therefore, option A is the correct answer. Motion, momentum, and energy all relate to the movement of objects, but they do not include the component of resistance being overcome by a force over a distance.

Question 12

A Class ____ lever has the fulcrum between the effort and load.

Accepted Answer

In a Class 1 lever, the fulcrum is located between the effort and the load. This type of lever is used in various tools such as scissors, pliers, and seesaws.

Question 13

____ are very important to mechanisms,because they transmit the input motion or force to the desired output location.

Accepted Answer

Linkages are crucial in mechanisms as they are used to transmit motion or force from one location to another, allowing for the desired output.

Question 14

____________________ ratio (VR)is the relationship between the distance moved by the effort and load.

Accepted Answer

The answer of ____________________ ratio (VR)is the relationship between the...

Question 15

In a kinematic diagram,two elements in relative motion and in contact with each other are known as ____.

Accepted Answer

Pairs are the elements in a kinematic diagram that are in relative motion and in contact with each other. This term is used to describe the connection between two parts that allows for motion, such as the pivot in a lever system or the bearing in a wheel.

Question 16

The Watt steam engine was a machine (transformed energy)connected to a ____ (capable of designed movement).

Accepted Answer

The Watt steam engine was a mechanism because it was a complex system of parts and components that were designed to work together to carry out a specific function. It was not a simple machine like a fulcrum or treadle, and it did not require a coordinate system to function.

Question 17

A ____ causes a body (mechanism)to accelerate (move).

Accepted Answer

A force is a push or pull that can cause a change in motion, which includes acceleration or changes in direction. The other options (fulcrum, kinematic chain, and coordinate system) are not directly related to causing acceleration or movement.

Question 18

Elements that join pairs together are known as chains.

Accepted Answer

Elements that join pairs together are known as bonds, not chains.

Question 19

____________________ is a branch of engineering mechanics that studies motion without regard to the force or mass of the things being moved.

Accepted Answer

The answer of ____________________ is a branch of engineering mechanics...

Question 20

Plastic gears are stronger than metal gears,but they are more expensive.

Accepted Answer

This statement is false. Generally, metal gears are stronger than plastic gears, but plastic gears have advantages in terms of cost, noise reduction, and self-lubrication.

Quiz 12: Designing Mechanical Systems