NOCTI Questions With 100% Correct Answers Latest Update 2024/2025 (GRADED)

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 - AnswerA 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 - Answerelectromagnet 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) NOCTI Questions With Correct Answers Latest 2024/2025 (GRADED) 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 - Answerresistance 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 - Answerdiameter 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 If containments block a system, the first place the blockage occurs is in - Answer- the suction side of a systems pump The speed of a pneumatic cylinder is affected mainly by - Answer- compressibility of air A network interface card (NIC) on a computer is receiving a series of pulses measuring +5 volts DC then alternating back to 0 volts. The +5 volt signal is referred to as - Answer- high Compared with hydraulic systems, pneumatic systems provide inexpensive material, faster operation and - Answer- a non-hazardous medium A photo diode - Answer- emits light when a current passes through it The relationship between gauge and absolute pressure is ( ) - Answer- gauge pressure = (absolute pressure) - (atmospheric pressure) When installing a new three-way pneumatic valve, a technician, should attach ports A and B to the - Answer- pneumatic cylinder Typical pressure gauges will read ______ at atmospheric pressures - Answer- 0 psi A _________ switch opens automatically when the current exceeds a predetermined safety level - Answer- limit The main advantage of drilling on the vertical mill rather than the drill press is that - Answer- holes can be more accurately located and spaced The technician should use a _____________ to cut a keyway in a shaft - Answermilling machine The most accurate way to cut square metal steel tubing is to use a/an - Answerhorizontal band saw The best use for a chasing die is to - Answer- recut damaged threads Undercutting is a condition that generally occurs when the - Answer- welding current is too high Abrasive cutoff saws penetrate material by grinding, which makes them valuable for cutting - Answer- extremely tough or hardened material The _________ code details welding requirements - Answer- AWS Use _______________ to join a nut to sheet material - Answer- arc welding When milling aluminum, set the mill at __________ RPM speed - Answer- high The _____________ code defines requirements when joining metals using the MIG (magnesium inert gas) process - Answer- AWS The acronym, OEM, refers to - Answer- original equipment manufacturers While the use of automated production and assembly systems in product manufacturing is well known, such work is still predominately accomplished manually by - Answerhuman operators A structural engineering company is designing a new stadium. The company has hired specialists to design the video and sound system, parking lot, and playing surface. The specialists are referred to as - Answer- sub contractors Which statement best describes precision alignment? - Answer- it projects shaft rotational centers in a straight line Having things done out-of-house instead of getting them done in-house is called - Answer- outsourcing When a force of 10 pounds is applied to the west and a force of 25 pounds is applied to the south, what is the resultant force? - Answer- 27 pounds SW The wind blowing 15 MPH from the west is called - Answer- vector A positive example of corrective action is a/an - Answer- change in maintenance procedure Manufacturing product quality control often includes - Answer- production flow charts Before installing a regulator on an oxygen cylinder, slightly crack open the cylinder valve, then close it completely to - Answer- blow out any foreign material in the valve Mixing oil and compressed oxygen can result in a/an - Answer- explosion or fire Wear approved safety glasses whenever working with machinery because - Answerthey are tested and rated for protection When a gas cylinder is at a work station, as a safety precaution, the cylinder should - Answer- be chained to a rigid object