ME 1001 Mindtap Quiz

The hull of the Titanic was held together by rivets. What kind of manufacturing process would this represent? a. Joining b. Casting c. Machining d. Extrusion

a. Joining

Which of the following parameters is not dimensionless? a. Rod stiffness b. Poisson's ratio c. Factor of safety d. Strain

a. Rod stiffness

What principles should designers always keep in mind during a design process? a. Simplicity, iteration, usability, and documentation. b. Design patent, utility patent, final layout, and CAD model. c. Virtual prototyping, mass production, simulation, and computer-aided design. d. Prototyping, milling, forming, and anodizing.

a. Simplicity, iteration, usability, and documentation.

It is inappropriate to report more significant digits in your solution than were given in the supplied information of the problem. a. True b. False

a. True

The Mach number is the ratio of the speed of an object to the speed of sound in the surrounding fluid, such as air. a. True b. False

a. True

The acceleration of a bullet is inversely proportional to its mass. a. True b. False

a. True

Typically standardized parts are normally produced by mass production. a. True b. False

a. True

The measure of a fluid's resistance to flow is known as ________ . a. Viscosity b. Incompressibility c. No-slip condition d. Drag

a. Viscosity

Divergent thinking is characterized by the elimination of ideas and the identification of the best few concepts. a. True b. False

b. False

Engineers should generally strive for complexity as a design principle. a. True b. False

b. False

Having an ultimate strength greater than that of the applied stress will prevent yielding. a. True b. False

b. False

The Accreditation Board for Engineering and Technology (ABET) is the premier professional organization representing mechanical engineers in the United States and internationally. a. True b. False

b. False

Which point/limit is the odd one out in the following list? a. Proportional limit b. Fracture point c. Yield point d. Elastic limit

b. Fracture point

What is the unit for heat? a. Dimensionless b. Joule c. Newton d. Watt

b. Joule

Forces applied to journal bearings that are oriented perpendicular to the length of the shaft are referred to as what kind of forces? a. Thrust forces b. Radial forces

b. Radial forces

What is the appropriate unit of mass to find the acceleration of the space shuttle on takeoff in the USCS system? a. Pound-force b. Slug c. Kilogram d. Newton e. Pound-mass

b. Slug

What do all these parameters have in common: Mach number, Reynolds number, coefficient of drag, and coefficient of lift? a. They are direction dependent. b. They are dimensionless. c. They cause the no-slip condition near solid boundaries. d. All of the above.

b. They are dimensionless.

If a fluid flows faster as it passes through a narrow horizontal section of a tube, according to Bernoulli's principle, the pressure will _____. a. rise b. drop c. stay the same

b. drop

The cooling fans of a laptop are an example of ________. a. conduction b. forced convection c. natural convection d. radiation

b. forced convection

Which of the following quantities can be measured in Poise? i Volumetric flow rate ii Pressure iii Density iv Viscosity a. ii only b. iv only c. i only d. iii only e. i, ii, iii and iv

b. iv only

The efficiency of a machine is always ________. a. below 50% b. less than 100% c. equal to 100% d. greater than 100%

b. less than 100%

A moment acts to make objects ________. a. expand b. rotate c. heat up d. oscillate e. compress

b. rotate

Heat engines convert ________ energy into ________ energy. a. mechanical; heat b. thermal; mechanical c. electrical; kinetic d. potential; kinetic

b. thermal; mechanical

The weight of a compact disk (CD) is measured to be 130.65 grams. What is the assumed precision of the measurement? a. ±0.05 grams b. ±0.005 grams c. ±0.5 grams d. More information is required.

b. ±0.005 grams

Which of the following is written correctly in SI units? a. 146.2 ft² b. 0.163 mkg c. 22 kg d. 12.6 slugs e. 81.3 Ws

c. 22 kg

When a stationary ship is floating in water, what two forces are balanced? a. Weight and lift b. Buoyancy and lift c. Buoyancy and weight d. Weight and drag e. Buoyancy and drag

c. Buoyancy and weight

This type of heat transfer occurs only in fluid that is in motion. a. Radiation b. Condensation c. Convection d. Conduction

c. Convection

Relative motion between a fluid and an object creates what kind of force acting parallel to the direction of the fluid flow? a. Shock wave b. Buoyancy c. Drag d. Lift

c. Drag

Which of the following titles is the least related to mechanical engineering? a. Manufacturing engineer b. Product engineer c. Electrical engineer d. Design engineer

c. Electrical engineer

What process would you use to form a product with a constant cross section? a. Welding b. Polishing c. Extrusion d. Milling

c. Extrusion

Which of the following is a proper expression of a base unit in the SI system? a. Volume, L b. Temperature, R c. Mass, kg d. Impulse, N∙s e. Weight, N

c. Mass, kg

"For every action, there is an equal but opposite reaction." Which law is this? a. Newton's second law of motion b. Newton's first law of motion c. Newton's third law of motion d. First law of thermodynamics

c. Newton's third law of motion

Identify the correct unit for a moment. a. N.kg b. kg∙s c. N∙m d. (kg∙m)⁄s

c. N∙m

Which law relates flow rate with viscosity, pipe length, and pressure difference? a. Newton's second law b. Bernoulli's law c. Poiseuille's law d. Hooke's law

c. Poiseuille's law

If a single prototype of a product is required much faster than conventional methods can produce, which of the following would make a suitable alternative? a. Casting b. Mass production c. Rapid prototyping d. Forming

c. Rapid prototyping

Which of the following is not one of the National Academy of Engineering's Grand Challenges? a. Provide access to clean water. b. Reverse engineer the brain. c. Resolve the global financial crisis. d. Advance personalized learning. e. Make solar energy economical.

c. Resolve the global financial crisis.

What mechanical engineering development is regarded as the profession's most significant achievement in the twentieth century? a. The Large Hadron Collider b. The space shuttle c. The automobile d. The iPad

c. The automobile

When discussing the solution to a technical problem, you should include all of the following except ________. a. the major conclusions for the given application that can be drawn from the solution b. an evaluation of the appropriateness of the assumptions c. a summary of the problem d. a discussion of whether the order of magnitude of the answer is reasonable

c. a summary of the problem

A rod which undergoes plastic deformation will ________. a. show a linear stress-strain relationship b. return to its original shape when the applied force is removed c. become permanently deformed d. approach its elastic limit if the force is not removed

c. become permanently deformed

Drag force is calculated by finding one half of the coefficient of drag multiplied by the fluid density, ________, and velocity squared. a. mass b. height c. frontal area d. volume

c. frontal area

Patenting an invention enables the owner to ________. a. become a member of the American Society of Mechanical Engineers (ASME) b. obtain government funding c. keep others from replicating the product d. own new technology as long as they live

c. keep others from replicating the product

All of the following are derived units except ________. a. energy b. volume c. length d. velocity e. pressure

c. length

The ________ of a material is the amount of energy it takes to raise a unit mass of that material by 1°C. a. thermal conductivity b. latent heat c. specific heat d. compression ratio

c. specific heat

The yield point in a stress-strain graph of a wire represents ________. a. the point when the wire breaks b. the point where yield strength in the wire is at its maximum c. the point when the wire starts to undergo plastic deformation d. the point when yielding in the wire stops

c. the point when the wire starts to undergo plastic deformation

If a laptop developed today has 2.5 million transistors, using Moore's law, predict how many transistors would be in a laptop developed 3 years from today. a. 7.5 million b. 2.5 million c. 5 million d. 10 million

d. 10 million

A 2.5 m 3 tank contains 6,500 kg of an unknown fluid. Find the density of the fluid. a. 3.85 x 10-4 kg/m 3 b. 63,700 N/m 3 c. 2,600 N/m 3 d. 2,600 kg/m 3 e. 63,700 kg/m 3

d. 2,600 kg/m 3

A rider uses 200 N of force to keep a bicycle moving at a constant speed of 8 m⁄s. What is the total work done after 20 s? a. 25 kJ b. 10 kJ c. 1600 kJ d. 32 kJ

d. 32 kJ

What is the yield strength in shear of a rod with a maximum allowable shear stress of 140 MPa if a safety factor of 2.5 is required? a. 2.5 MPa b. 140 MPa c. 56 MPa d. 350 MPa

d. 350 MPa

What is the strain of a 6-m long wire with a diameter of 1.5 mm that stretches by 3 mm when a load is applied? a. 2×10^3 b. 2×10^−4 c. 0.5 d. 5×10^−4

d. 5×10^−4

Fluid flowing down a drainage pipe with a constant diameter attains an average fluid velocity of 3 m/s. What is the maximum velocity reached by any part of the fluid? a. 1.5 m/s b. 9 m/s c. 3 m/s d. 6 m/s

d. 6 m/s

An example of elastic potential energy is found in ________. a. a stretched rubber band b. an inflated balloon c. a compressed spring d. All of the above

d. All of the above

______ is the upward force on an object that is immersed in a fluid, even if the object and fluid are stationary. a. Drag b. Turbulence c. Lift d. Buoyancy e. Weight

d. Buoyancy

Which of the following quantities are both expressed in derived units? a. Length and current b. Mass and acceleration c. Volume and time d. Density and area

d. Density and area

Which of these statements correctly describes Hooke's law? a. Extension is directly proportional to the spring constant. b. Extension is inversely proportional to the Poisson's ratio. c. Extension is directly proportional to load in the plastic region. d. Extension is directly proportional to force in the elastic region.

d. Extension is directly proportional to force in the elastic region.

How many significant digits are in the measurement 2.0030 cm? a. Two b. One c. Four d. Five e. Three

d. Five

What energy is required to change ice into water without a change in temperature? a. Heating value b. Specific heat c. Forced convection d. Latent heat

d. Latent heat

Does the equation below show dimensional consistency? "Force = Mass ∗ Acceleration 981 N = 100 lb ∗ 9.81 m⁄s²" a. No, because it mixes base and derived units. b. No, because the values have varying significant digits. c. Yes, because the calculation is correct, hence so are the dimensions. d. No, because it mixes SI and USCS units

d. No, because it mixes SI and USCS units

The fundamental aim of an engineer is to discover physical laws. True or False?

False.

What information would not be appropriate for the body of an engineering report? a. Full transcripts of all product development meetings b. Clear support for the major decisions made in the development process c. Testing results including appropriate tables and graphs d. Performance calculations

a. Full transcripts of all product development meetings

Brittle metals, unlike ductile metals, exhibit a considerably large plastic deformation before sudden failure. a. True b. False

b. False

What scientific notation is represented by the prefix "micro"? a. 10^−6 b. 10^3 c. 10^−9 d. 10^−3

a. 10^−6

A horse pulls a 981-N cart with a constant horizontal force of 200 N. Neglecting any friction, find the horizontal acceleration of the cart. a. 2 m⁄s² b. 0.2 m⁄s² c. 48.1 m⁄s² d. 9.81 m⁄s²

a. 2 m⁄s²

A 3-m long wire with a radius of 3 mm has a 150 N force applied to it. If its length increases by 15%, what is its Young's modulus? a. 35.4 MPa b. 15.9 MPa c. 106 MPa d. 35.4 Pa

a. 35.4 MPa

A stone accelerating at 9.81 m/s2 has a force of 49 N acting on it. What is its mass? a. 5 kg b. 5 g c. 5 N d. 5 lb

a. 5 kg

A 5-m long steel wire with a cross-sectional area of 0.5 cm 2 and a Young's modulus of 200 × 10 9 N⁄m 2 is used to lift a mass of 1200 kg. How much does the wire stretch? a. 5.89 mm b. 5.89×10&^−4 mm c. 0.60 mm d. 19.3 mm

a. 5.89 mm

If 7.2 kJ of work is done to move a 50-kg box over a distance of 11 m, find the force exerted on the box. a. 655 N b. 490 N c. 0.65 N d. 165 N

a. 655 N

A 60-g bullet is shot at a height of 200 m above ground, leaving the gun nozzle with a total kinetic energy of 240 N-m. What is the bullet's initial speed when it leaves the gun nozzle? a. 89.4 m⁄s b. 117.7 m⁄s c. 62.6 m⁄s d. 2.83 m⁄s

a. 89.4 m⁄s

Which of the following skills does ABET not require engineering graduates to have? a. An ability to start a technology company. b. An ability to understand the impact of engineering solutions in a global, economic, environmental, and societal context. c. An ability to design a system, component, or process to meet desired needs. d. An ability to function on multidisciplinary teams. e. An ability to design and conduct experiments, as well as to analyze and interpret data.

a. An ability to start a technology company.

Identify an appropriate process to solve technical problems. a. approach → solution → discussion b. tables → figures → charts c. communication → estimation → testing d. summary → assumptions → identify

a. approach → solution → discussion

A loading situation where an attachment is stressed in shear across two loaded planes simultaneously is known as ________. a. double shear loading b. double plane loading c. single shear loading d. transverse double loading

a. double shear loading

According to the first law of thermodynamics, the total amount of energy in a system ________. a. is constant b. is infinite c. increases at a steady rate d. decreases faster and faster

a. is constant

An apple falling from a tree is ________. a. losing gravitational potential energy and gaining kinetic energy b. gaining both gravitational potential and kinetic energy c. losing gravitational potential energy, but gaining elastic potential energy d. not gaining or losing any kinds of energy

a. losing gravitational potential energy and gaining kinetic energy

Unit vectors i and j represent vectors in the ________ and ________ directions respectively. a. positive x; positive y b. negative x; negative y c. positive x; negative y d. positive y; positive x e. negative x; positive y

a. positive x; positive y

The process of reconstructing the life cycle of a product to understand the decisions that led to its development is known as ________. a. product archaeology b. detailed design c. conceptual design d. rapid prototyping

a. product archaeology

Power is expressed as ________. a. work per unit time b. energy per unit area c. force multiplied by distance d. mass times gravity times the change in height

a. work per unit time

If the largest volume capacity of the combustion chamber before the compression stroke is 75% larger than its smallest capacity after the stroke, determine the compression ratio. a. 0.75 b. 1.75 c. 75 d. 0.57

b. 1.75

Using the x and y components of a force, F x = 150 N and F y = 110 N, determine the magnitude and angle of action of the force. a. 186 N, 53.7° b. 186 N, 36.3° c. 260 N, 53.7° d. 260 N, 36.3°

b. 186 N, 36.3°

An airfoil with an area of 20 m² and a lift coefficient of 0.8 flows through a fluid with density of 1.3 kg⁄m³. If the airfoil is subjected to a lift force of 200 N, what is its velocity? a. 3.1 m⁄s b. 4.4 m⁄s c. 45.6 m⁄s d. 19.2 m⁄s

b. 4.4 m⁄s

Which discipline links traditional engineering fields with the life sciences and medicine? a. Mechatronics b. Bioengineering c. Biochemistry d. Aerospace engineering

b. Bioengineering

A hockey puck sliding on a perfectly frictionless surface will eventually come to rest due to inertia. a. True b. False

b. False

An object is said to be in equilibrium if the resultant force acting on it is greater than zero. a. True b. False

b. False

Identify the task that would be performed in the detailed design stage of a design process. a. Brainstorming to generate new product ideas. b. Casting the parts using liquid metal. c. Identifying requirements regarding the functions the product must accomplish. d. Optimize final product geometry including tolerances

d. Optimize final product geometry including tolerances

Identify the correct list of stages in a design process. a. Conceptual design, simplicity, mass production. b. Requirements development, product production, conceptual design. c. Innovation, patenting, requirements development, rapid prototyping. d. Requirements development, conceptual design, detailed design, product production.

d. Requirements development, conceptual design, detailed design, product production.

What parameter determines the behavior of viscous flow patterns? a. Mach number b. Drag coefficient c. Angle of attack d. Reynolds number

d. Reynolds number

What is the purpose of the Accreditation Board for Engineering and Technology (ABET)? a. To provide patents for all engineering developments. b. To represent mechanical engineers in the United States and internationally. c. To discover new cutting edge technologies. d. To endorse and certify college and university engineering programs.

d. To endorse and certify college and university engineering programs.

How are rigid bodies distinguished from particles? a. Rigid bodies are physically larger than particles. b. Rigid bodies are the same as particles and can be treated similarly. c. Rigid bodies have much greater rigidity in structure. d. Unlike particles, the dimensions of rigid bodies are essential for the problem being considered.

d. Unlike particles, the dimensions of rigid bodies are essential for the problem being considered.

A(n) ________ is an engineered material made from two or more constituent metals which do not remain separate and distinct on a macroscopic level. a. ceramic b. elastomer c. composite d. alloy

d. alloy

Engineers should develop product design innovations considering ________. a. technological advances only. b. stylistic advances only. c. neither technological nor stylistic advances. d. both technological and stylistic advances.

d. both technological and stylistic advances.

A force is an example of a vector because it has both ________ and ________. a. USCS units; SI units b. size; magnitude c. direction; polarity d. magnitude; direction

d. magnitude; direction

Power generating and power consuming systems are primarily designed and developed by ________. a. industrial engineers b. electrical engineers c. structural engineers d. mechanical engineers

d. mechanical engineers

A ________ is a single force acting on an object to produce the same net effect as all the collective forces acting on the object. a. vector polygon b. scale drawing c. force system d. resultant force

d. resultant force

Manufacturing processes are a set of processes which add ________ to ________ by converting them into useful ________. a. technology; customers; consumers b. innovation; products; raw materials c. virtual prototypes; products; models d. value; raw materials; products

d. value; raw materials; products

An astronaut accidentally drops a wrench in space. According to Newton's first law of motion, the force required to keep the wrench moving is ________. a. proportional to the force exerted by the astronaut's hand b. proportional to its momentum c. proportional to its mass d. zero

d. zero

What effect does doubling the diameter and length of a wire have on elongation (ΔL) if everything else is kept constant? a. ΔL⁄8 b. 2ΔL c. ΔL⁄4 d. ΔL⁄2 e. ΔL does not change

d. ΔL⁄2

Which of the following are required of engineers? a. To understand professional and ethical responsibility and be able to resolve conflicts with honesty and integrity. b. To design safe products that meet the standards of organizations such as the American Society of Mechanical Engineers, Underwriters Laboratories, and the American Society of Testing and Materials c. To communicate calculations, computations, measurement results, and designs effectively in both written and verbal forms. d. To adhere to the codes and standards that are necessary to specify the physical characteristics of mechanical parts so that others can clearly understand their structure and operation. e. All of the above.

e. All of the above.

Microchips found inside most electronic devices today are examples of what material? a. Polymers b. Alloys c. Metals d. Composites e. None of the above

e. None of the above

When developing the system requirements in a design process, which issues must be considered? a. Economic issues b. Social factors c. Functional performance d. Environmental impact e. Only a and c f. All of the issues a-d

f. All of the issues a-d