BCTC Industrial Maintenance Technology AMTEC (NOCTI Mechatronic) Review Final Exam Answers, Exams of Mechatronics

Download BCTC Industrial Maintenance Technology AMTEC (NOCTI Mechatronic) Review Final Exam Answers and more Exams Mechatronics in PDF only on Docsity! BCTC Industrial Maintenance Technology AMTEC (NOCTI Mechatronic) Review Final Exam Questions with Correct Answers If you inhale phenolic fumes what would happen to you? - Correct Answers Trouble breathing A _________ fire extinguisher should be used on an electrical fire. - Correct Answers Class C What does OSHA stand for? - Correct Answers Occupational Safety & Health Administration This type of drawing represents a three-dimensional object using several two- dimensional views of the object. - Correct Answers Orthographic What are linear dimensions usually expressed in? - Correct Answers Decimal or Fractional Units What does a filled triangle represent in a fluid power diagram? - Correct Answers Hydraulic Flow What can happen if bolts and nuts are not properly torqued? - Correct Answers They wear out quickly and can cause failure. What safety practice is used to prevent equipment from being energized? - Correct Answers Lockout/Tag out A Safety Data Sheet (SDS) provides information about first aid measures, stability and reactivity, and _____? - Correct Answers Handling and Storage Which of the following is not true of a title block? - Correct Answers Format is the same from company to company. A NFPA 70E is a regulation that provides guidelines and details for ___________? - Correct Answers Electrical safety GFCI devices are used for what purpose? - Correct Answers to prevent a person from being electrocuted. A person with serious electrical injury should be moved only when _______. - Correct Answers they are in immediate danger What must be provided by chemical manufacturers, distributors, and importers to anyone who will work with these potentially dangerous materials? - Correct Answers Safety Data Sheet (SDS). You come across a fellow employee who is being electrocuted by becoming attached to a live electrical circuit, what is the first thing you should do? - Correct Answers shut off the circuit. What would slippery floors and cluttered walkways be considered in the workplace? - Correct Answers Physical hazards. What tool is used to measure the turning force when tightening a fastener? - Correct Answers Torque Wrench When working on an electrical, fluid power or mechanical system a ____ procedure should be performed to lock out the energy. - Correct Answers LOTO The section of a technical report which summarizes the report's contents is called what? - Correct Answers Abstract What does a thick line represent in a schematic diagram? - Correct Answers Current flow A switch is an example of a _____ into a motor control circuit. - Correct Answers input How does the overload of a motor provide protection when current exceeds a predetermined value? - Correct Answers it opens a normally closed contact. Overload protection is designed to protect the ______________ by disconnecting it from the power source when an overload is sensed. - Correct Answers Electric motor Motors are normally protected from overload by a _______ device. - Correct Answers thermal T/F: A two-wire control for a motor will restart automatically when power is restored after a power failure. - Correct Answers True What is the most common machine wire type? - Correct Answers THHN T/F: A three-wire controlled motor will restart automatically after power is restored after a power failure. - Correct Answers False Jogging is a type of motor control in which what happens? - Correct Answers The motors rotation is moved (bumped) slightly. If four 100 ohm resistors are placed in series and then connected to a 40VDC power supply, what is the power dissipated by one of the resistors? Rat= R1+R2+R3... P= (V*V)/R - Correct Answers Rat= 100+100+100+100= 400R P= (40*40)/400= 4W 4W/4= 1W For an electrolytic capacitor, the negative lead connects to? - Correct Answers Lower voltage. Is it true that polarity must be observed when installing an electrolytic capacitor in a circuit? - Correct Answers Yes What is voltage? - Correct Answers electromotive force or potential difference expressed in volts. What device is placed between solar panel and the power line to convert DC to AC? - Correct Answers Inverter Which article of the NEC covers definitions? - Correct Answers Article 100 The NEC states that a non-metallic sheathed cable be secured by staples or straps within _________ from every cabinet, box, or fitting? - Correct Answers 12 inches Race ways are not used to... - Correct Answers control the amount of voltage allowed in an electrical distribution system. What article in the National Electric Code covers motors, motor branch-circuit and feeder conductors and their protection? - Correct Answers Article 430 Based on the NEC color-coding requirements, ground conductors must be designated by _____ and neutral conductors by _____. - Correct Answers green, white A detached garage has a breaker panel which is connected to a breaker in the house breaker panel. What type of circuit is the garage breaker panel considered? - Correct Answers Branch Fuses and breakers are examples of what? - Correct Answers Overcurrent protection devices In residential structures, GFCI outlets are required in ______. - Correct Answers Garages Who is responsible for enforcing the NEC? - Correct Answers Local authority having jurisdiction. A water meter is installed into the incoming copper water pipe in a house. There is copper water pipe on each side of the water meter. A wire is placed around the water meter connecting the inlet copper pipe to the output copper pipe. What is the main purpose of this wire? - Correct Answers to bond the inlet to the outlet copper water pipes around the water meter. The winding ratio of a _________ transformer has a rating of 3:1 winding ratio. - Correct Answers Step-down T/F: In an induction motor, there is no physical connection to the rotor - Correct Answers True What is the purpose of a capacitor in a capacitor-start motor? - Correct Answers to create a phase shift between the run winding and the start winding. The transformer winding to which the line is connected is called the _______ winding. - Correct Answers Primary How do you reverse the direction in the split-phase motor? - Correct Answers reverse the polarity to the start winding. An electric motor is used to change... - Correct Answers electrical energy into mechanical energy The low voltage winding of a three phase motor is connected in ________. - Correct Answers parallel What is the main purpose of the centrifugal switch in a capacitor-start motor? - Correct Answers it is closed at start up to place the capacitor in series with the Start winding which creates the phase shift needed to rotate the rotor. A control transformer has ___ input coils and ___ output coil. - Correct Answers Two, one How do three-phase motor windings get connected for low-voltage? - Correct Answers Parallel How do you change the direction in a split-phase motor? - Correct Answers switch the connection to the start winding. In a split phase motor, the starter wire is a _______ size wire than the run winding. - Correct Answers smaller What is the purpose of using flux? - Correct Answers to remove oxidation during soldering. What is most commonly used semiconductor material for rectifier diodes? - Correct Answers Silicon. A continuous path along a conductor which electrical current can flow from an energy source is called a/an _________________. - Correct Answers electrical circuit A western union splice is used to... - Correct Answers join small solid conductors together. What turns alternating current into pulsating direct current? - Correct Answers Rectifier circuit. A condition caused by a break in a circuit causing current to stop flowing is known as a/an ____________. - Correct Answers open circuit In a full-wave bridge rectifier, what component is used to reduce AC ripple? - Correct Answers Capacitors How many pulses per cycle occur in single-phase half-wave rectification? - Correct Answers One. To properly store a solder pencil or start any soldering procedure, the technician should... - Correct Answers Tin the tip. A material that allows electrons to flow through it easily or a pathway for electricity is known as a/an _________. - Correct Answers conductor The binary equivalent of 74 is... (This is an odd question a.m.) - Correct Answers 1001010 What would you use in a PLC-controlled system to learn the total accumulated time a motor has been running? - Correct Answers Retentive timer. Two XIC (examine if closed) inputs are placed in parallel; this would be equivalent to which logic circuit? - Correct Answers OR The following truth table represents which logic circuit? (Odd question) A B Y 0 0 1 0 1 1 1 0 1 1 1 0 - Correct Answers NAND The decimal equivalent of 7E416 is... - Correct Answers 2020 Three principles used in the operation of automated machinery are electrical, __________, and fluid power. - Correct Answers mechanical The robot's work envelope, controller, and ________________, make up the area called the work cell. - Correct Answers peripheral devices What is used for repetitive sequence motion in manufacturing industries? - Correct Answers Robots What is the area called that includes the full range of a robot's movement? - Correct Answers Work envelope. What is the first step in programming a new robot? - Correct Answers Homing. A set of rules that governs the connection of computer systems to the internet is ______. - Correct Answers TCP (Transmission Control Protocol)/IP (Internet Protocol) Transmission Control Protocol/Internet Protocol (TCP/IP) is a communications architecture used for... - Correct Answers networking computers and to communicate across the internet. Insufficient valve clearance can cause A. Coolant leakage B. A burnt valve C. Worn valve D. Oil leakage - Correct Answers B. A burnt valve Spur gears have teeth that are ________. A. Curved B. Straight C. Herringboned D. Beveled - Correct Answers B. Straight The electrolyte in a battery is a solution of water and ______. A. Sulfuric acid B. Baking soda C. Viscous oil D. Hydrogen sulfide - Correct Answers A.Sulfuric acid One sign of a defective hydraulic brake system is __________. A. Low gas mileage B. Uneven tire wear C. Non-operational stop lights D. Low brake fluid level - Correct Answers D. Low brake fluid level The resistance of a liquid to flow is _____. A. Viscosity B. Velocity C. Reciprocity D. Density - Correct Answers A. Viscosity Which step of problem solving helps to determine if a certain product is of value? A. Identifying possible solutions B. Identify the problem C. Implementation D. Evaluation - Correct Answers D. Evaluation Shaping of metal by squeezing them in between two or more dies in order to obtain desired shape is done by? A. Forging B. Welding C. Grinding D. Chipping - Correct Answers A. Forging What is the joining of metals by applying pressure and passing current for a length of time through the metal area which is to be joined? - Correct Answers Resistance welding There are several types of _________ welding processes, including spot-and-seam, flash, projection, and upset welding. - Correct Answers resistance What is the process of constructing products by combining typically standardized parts using one or more individual processes? - Correct Answers Fabrication What type of machine in a manufacturing process uses computers to run programs that control how the machines will manufacture parts? - Correct Answers CN/CNC When using a ladder around electrical lines, the worker should _____. A. Make sure the ladder has a good base B. Use wooden stand-offs C. Not use a metal ladder D. Wrap the ladder in rags - Correct Answers C. not use a metal ladder What is capillary attraction when soldering or brazing? A. When the filler metal flows away from the heat. B. When the capillary lube is connected to the suction line. C. When the filler metal flows towards the heat. D. When hot fluid metal rises only to the top of the pipe. - Correct Answers C. When the filler metal flows towards the heat. The purpose of a step-down transformer is to ________. A. Decrease secondary current B. Increase the current for the control unit C. Decrease secondary voltage D. reduce voltage for control circuit safety - Correct Answers C. Decreases secondary voltage Incomplete combustion results from a lack of _________. A. Fuel B. Oxygen C. Carbon monoxide D. Carbon dioxide - Correct Answers B. Oxygen A hydroid zone-control valve is actuated by ___________. A. Temperature of water B. Circulator C. Thermostat D. Pressure of water - Correct Answers A. Temperature of water The rapid cooling of heated metal for the purpose of hardening the metal is called __________. A. Carburizing B. Spheroid zing C. Annealing D. Quenching - Correct Answers D. Quenching A cut-off parting operation is hazardous when work is turned ____. A. In an independent chuck B. A universal chuck C. In a collet D. Between centers - Correct Answers??? Find the feed rate of a 4-tooth cutter, using a 0.005 chip load, at a speed of 200 RPM. A. 2 inches per minute B. 4 inches per minute C. 6 inches per minute D. 8 inches per minute FR=RPM * T * CL FR= the calculated feed rate in inches per minute or mm per minute. RPM= calculated speed of the cutter T= Number of teeth on the cutter CL= the chip load or feed per tooth - Correct Answers FR= 200 * 4 * 0.005 FR= 4 inches per minute