Mechanical and Electrical Properties of Materials, Exams of Nursing

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NOCTI Questions with complete solutions 2024 How much does one gallon of water weigh? - Answer- 8.3 pounds Nonferrous metals does not contain any - Answer- iron Which of the following is a ferrous metal? - Answer- mild steel Properties of common ______________ materials are divided into the following categories: physical, mechanical, thermal, electric, and acoustic - Answer- solid Tensile strength is the resistance a metal has to being pulled apart - Answer- A typical form of mechanical stress is - Answer- overload Which of the following tests is nondestructive? - Answer- vibration analysis The ability of a metal to withstand shock loading is known as its - Answer- toughness Steel reinforcing bars are added to concrete to resist the force of - Answer- tension Tungsten is a metal with the physical properties of - Answer- high strength and good electrical conductivity Which of the following adversely effects the strength of materials? - Answer- corrosion Pneumatic fluid power can deliver linear and ______ forms of motion - Answer- rotary Gauge pressure at sea level is - Answer- 0 psi A coil surrounding an iron core, to which voltage has been applied, is a/an - Answer- electromagnet Use a ______ to determine hydraulic pressure - Answer- pressure gauge A _________ is a pictorial representation of a process, using a variety of symbols connected by lines and arrows - Answer- process flow chart How many ports are in a two-way valve? - Answer- 2 The relationship of force, pressure and piston area in an air cylinder is represented by ( ) - Answer- force = (pressure) X (area) When energized, a solenoid actuates upon which of the following? - Answer- steel A solenoid works on the principle of - Answer- electromagnetic force pneumatic directional control valves are, many times, sized for convenience of piping; however, a more efficient method is to size according to - Answer- flow coefficient An engineer has connected an oscilloscope to measure the output of a standard wall electrical outlet. The oscilloscope shows a 60 hertz sine wave measuring 120 volts. This signal is - Answer- analog The worst enemy of a pneumatic system is - Answer- contamination A specialized schematic used to document industrial control logic systems is a - Answer- ladder diagram The flow through a flow control valve will increase with increase with an increased - Answer- orifice or throat size In a fluid system, fluid encounters more ______ when it travels long distances - Answer- resistance The relationship of force, pressure, and piston area in an air cylinder is represented by - Answer- force = pressure x area A photo detector converts light to a/an ____________ signal - Answer- electrical Fluid in a hydraulic system is basically - Answer- not compressible In fluid resistance systems, resistance is affected by the ______ of the pipe - Answer- diameter To determine pressure in a hydraulic system, ________ the total force by the area on which it acts - Answer- divide The purpose of a hydraulic system is to - Answer- transform mechanical energy into hydraulic energy Atmospheric pressure at sea level is - Answer- 14.7 psi Increasing a flowing liquids viscosity or friction, or changing flow direction, will result in - Answer- velocity increase The formula for force of a hydraulic cylinder is (4 words) - Answer- pressure multiplied by area The purpose of "Just-In-Time" material system is to control - Answer- inventory An international body of technical standards for various industries, designed to promote international trade, engineering conformance, and most recently environmental awareness is known as - Answer- International Energy Data and Analysis Use ___________ to measure an existing part and generate dimensions for a drawing - Answer- vernier caliper A measure of the degree to which equipment is in an operable state at any point in time is called - Answer- availability One inch is equal to - Answer- 25.40 millimeters The government organization whose purpose is to set and enforce worksite safety and health standards is - Answer- OSHA Dispose of oily and paint covered rags - Answer- in a step-type safety metal can When testing with compressed air, caution should be given to the _______________ used - Answer- pounds per square inch gauge For a 365 day year with 20 days of scheduled downtime, availability is - Answer- 345 days When lead acid batteries are charging, they give off ___________ gas - Answer- hydrogen and oxygen Since 1971, when _____________ was created, occupational deaths have been cut by 62 percent and injuries have declined by 42 percent - Answer- OSHA A good method of maintaining a safe work area is to maintain a clean work bench, attend safety meeting and - Answer- abide by safety signs Identifying leaders in the assembly process in order to routinely compare one's processes and outputs to the leader is called - Answer- benchmarking Statistical quality control tools often include - Answer- control charts The effort to improve the quality of products and attain cost savings by the manufacture of products without error is a continuous - Answer- goal Use ______________ with an oxygen or acetylene regulator - Answer- no lubricant at all Training on _______________ may be given to comply with OSHA in the workplace - Answer- asbestos When a micrometer, applied a telescoping hole gauge, reads 6.488 inches for a diameter of a hole that is to be bored 6.494 inches, the hole is to be considered to be - Answer- .006 inch undersize A means of monitoring the assembly and fabrication process by gathering data and samples to evaluate variations in the process that may impact the final product is called - Answer- statistical process control A good quality assurance system can - Answer- both reduce cost and increase value A _______________ measures length to an accuracy of 0.001 inch - Answer- micrometer Immediately report malfunctions to - Answer- safety engineer When a micrometer reads 2.468 inches for a hole that is to be bored 2.473 inches, the hole is to be considered to be - Answer- 0.005 inch undersize When storing gas cylinders, it is important that they be stored in - Answer- well ventilated areas As an object heats up, the object ______ than they absorb - Answer- emits (discharge) more heart In the DC circuit below, if R5 burns open, the total current - Answer- decreases An electric inverter ______ - Answer- changes DC to AC Which of the following colors of the electromagnetic spectrum is the coolest? - Answer- blue Power in electrical systems can be expressed as - Answer- P = volts x amps Because switches can fail after opening a disconnect, the safest practice is to - Answer- test the power circuit at the load (downstream) side of the disconnect The third color band on a resistor defines the - Answer- multiplier The junction of two dissimilar metals that produces a voltage proportional to the amount of heat applied is - Answer- thermocouple In a _______ system, all components must operate successfully for the system to function correctly - Answer- series The resistance of a wire is a function of its length, diameter, and ___________ - Answer- material type In the diagram below, the load is represented by - Answer- 2 There are _____ of separation on the Celsius scale between freezing and boiling water - Answer- 100 A test instrument that displays a waveform is an - Answer- oscilloscope Select electrical component listed below that uses the below schematic symbol - Answer- resistor Install surge protection on electrical equipment to - Answer- shield equipment from sudden power increases An automotive engineer needs to design a radiator for a new model automobile. To facilitate heat transfer, the best construction material for a radiator is - Answer- copper When measuring current, the meter should be connected in - Answer- series A diode is a device that will - Answer- permit current to flow it in only one direction A _______ measures electrical current - Answer- ammeter A stainless steel kettle will emit _____ heat than the same sized cast iron kettle at the same temperature. - Answer- more Static friction is a form of - Answer- non-moving mechanical resistance What is the primary function of insulation? - Answer- maintain temperature If the meter function is set for AC voltage, a "no voltage" reading taken across a fuse in a powered circuit indicates that the - Answer- fuse is good Ohm's :aw states - Answer- R = E / I Circuit breakers are wired in __________ with the load - Answer- series The primary function of the fuse(s) in a circuit should be to __________ - Answer- protect from short circuit In a simple DC circuit with a constant voltage, as resistance increases, current will - Answer- decrease The screw is an example of the application of which other simple machine? - Answer- incline plane A knitting needle is an example of which type of simple machine? - Answer- wedge Bolts and screws should be designated by the following data in which sequence shown below? - Answer- nominal size, threads per inch, product length for bolts and screws, and product name, material, and finish Roller coasters are designed based on the application of which of the following simple machines? - Answer- inclined plane and the wheel and axle In a caliper type disc brake, the caliper is used to - Answer- squeeze the friction material against both sides of a spinning disc When specifying and identifying threads, what does the 2 in 1/2 - 13 UNC-2A represent? - Answer- class of fit Align belt pulleys and chain sprockets by - Answer- using a straight edge If a speed reducing system (belt, chain, gears, etc.) has a reduction of 2 to 1, then if - Answer- 200 RPM is input, 100 RPM will be output Rack and pinion are employed when it is necessary to change - Answer- circular (rotary) motion to linear motion When lubricating a bearing, the worst mistake would be to - Answer- get dirt in the bearing Systems that generate, transmit, and distribute power used in processing information, communication, and controls for mechanical, fluid, electrical, and thermo systems are functions of a ___________ engineer. - Answer- mechanical Engineering technologists apply _________ and engineering knowledge with technical skill to assist engineers. - Answer- scientific The ___________ has established rules or standards of conduct in the Engineer Code of Ethics, which governs the profession. - Answer- Accreditation Board of Engineering and Technology (ABET) = American Association of Engineering Societies (AAES) Engineers whose ability to find good solutions often defines their choice of engineering specialty. An example is the engineer who deals with surveying, who is called a/an _________ engineer. - Answer- civil An engineering field dealing with atmospheric pollutants is called _________ engineering - Answer- environmental The first man in history to be credited with making a powered, sustained, and controlled flight was - Answer- Orville Wright A civil engineer is best suited to - Answer- investigate the mechanics of bridges and roads Which of the following engineering fields of specialization involves the application of chemistry, physics, and engineering in the production of materials? - Answer- chemical engineering A traditionally trained electronic engineering student took classes in electronics, math, physics, and chemistry. Recent changes in industry now require electronic engineering students to also take courses in - Answer- computer software In determining the degree of acceptable risk in a project, the engineer should always consider - Answer- a cost/risk/benefit analysis The first person in history to be credited with inventing the lightening rod is - Answer- Benjamin Franklin The mechanical engineer is best suited to perform __________ analysis - Answer- pipe stress Engineers who work primarily on the process of converting raw materials to finished products are called - Answer- manufacturing An engineer who is pursuing a master's degree in environmental engineering must have a ______________ degree from an accredited college. - Answer- bachelor's Engineering is a diverse profession with many branches or fields of specialization, including ______________ engineering. - Answer- electrical Investigating the properties and mechanics of construction materials and the mechanics of structures, soils, bridges, and roads are functions of a ________________ engineer. - Answer- civil In the mid-19th century through the 20th century, the development of mechanized equipment replaced human and animal power and significantly increased productivity in - Answer- agriculture When selecting a product solution, the most important factor for an engineer to consider is - Answer- safety Students enrolled in biomedical engineering field are required to take _____________ classes. - Answer- material and electrical Engineers can be best describes as - Answer- problem solvers The concept where each worker performed a single task as the product moved down a conveyor belt was first adopted at - Answer- Ford Motor Company Ethical conduct in engineering is the responsibility of the - Answer- individual engineer An electrical engineer who changes circuit board layouts to accommodate new parts will work closely with the ___________ to revise the drawings - Answer- CAD operator The first step in the design process is to - Answer- identify the problem After a new airplane is developed, the next step is to build a prototype. The final step, prior to full production is to - Answer- test Dimensional requirements for fittings and components are covered by - Answer- American Society of Mechanical Engineers (ASME) Identifying, defining, selecting, implementing, and evaluating are all components of the __________ process - Answer- engineering design What is the first step in preparing for a presentation? - Answer- define the audience One of the final steps to the solution process is to - Answer- confirm that the actual result coincides with the forecasted result A design drawing with a completed and signed title block is a - Answer- graphic contract Which of the following is a method of prototype testing? - Answer- destructive Which line indicates a center line? - Answer- _________ ___ _________ ___ _________ Technical communication skills help the engineer - Answer- read, write, and comprehend technical reports A protractor is used for measuring - Answer- angles Which of the following drawing methods would be used to generate a 2D multiview drawing? - Answer- orthographic A specialized schematic used to document industrial control logic systems is a - Answer- ladder diagram