How does an infrared sensor work? Active infrared sensors both emit and detect infrared radiation. Active IR sensors have two parts: a light emitting diode (LED) and a receiver. When an object comes close to the sensor, the infrared light from the LED reflects off of the object and is detected by the receiver. What […]
What do you do when you see a red lighted buoy with the number 6?
Which is the strongest bond ionic covalent or metallic?
Which is the strongest bond ionic covalent or metallic? Comparison Chart Basis for Comparison Covalent Bond Ionic Bond Bond energy Higher than the metallic bond. Higher than the metallic bond. Electronegativity Polar covalent: 0.5-1.7; Non-polar<0.5. >1.7. Examples Diamond, carbon, silica, hydrogen gas, water, nitrogen gas, etc. NaCl, BeO, LiF, etc. Is ionic bonding stronger than […]
Where are power factor correction capacitors installed?
Where are power factor correction capacitors installed? Capacitors are connected directly to the terminals of inductive circuit. Individual compensation should be considered when the power of the motor is significant with respect to the declared power requirement (kVA) of the installation. How does adding a capacitor improve power factor? Power factor correction capacitors increase system […]
Which software is used for drafting?
Which software is used for drafting? AutoCAD professional design Which software are used in the basic engineering drawing? Auto CAD is still the most widely used engineering drawing software. Utilizing C++ code allows engineers and drafters to customize CAD objects, resulting in more accurate and flexible drawings. For Mac and Linux, QCAD is the popular […]
What type of welding is used in construction?
What type of welding is used in construction? Shielded Metal Arc Welding What welding process is used for high production welding? GMAW What equipment is used for arc welding? The welding machine used can be A.C. or D.C. welding machine. The A.C. welding machine has a step-down transformer to reduce the input voltage of 220- […]
How is mean time between failure calculated MTBF?
How is mean time between failure calculated MTBF? To calculate MTBF, divide the total number of operational hours in a period by the number of failures that occurred in that period. MTBF is usually measured in hours. For example, an asset may have been operational for 1,000 hours in a year. Therefore, the MTBF for […]
What is an example of an ethical situation?
What is an example of an ethical situation? Some examples of ethical dilemma examples include: Taking credit for others’ work. Offering a client a worse product for your own profit. Utilizing inside knowledge for your own profit. What makes a situation ethical? Ethical dilemmas are situations in which there is a difficult choice to be […]
What types of protection is an employer required to pay for?
What types of protection is an employer required to pay for? With few exceptions, OSHA requires employers to pay for personal protective equipment when it is used to comply with OSHA standards. These typically include: hard hats, gloves, goggles, safety shoes, safety glasses, welding helmets and goggles, face shields, chemical protective equipment and fall protection […]
What is the difference between boring and reaming?
What is the difference between boring and reaming? Boring is performed to enlarge an existing hole or to convert a cylindrical hole into a taper hole. Reaming is carried out to highly finish the surfaces of a hole. Its purpose is to improve dimensional accuracy and tolerance. What are the differences between boring on a […]