What OSHA construction standard is used for electrical equipment with exposed electric 50 volts or more? Response: The provision in question, 29 CFR 1910.303(g)(2)(i), generally requires “live parts of electric equipment operating at 50 volts or more” to be “guarded against accidental contact by use of approved cabinets or other forms of approved enclosures” or […]
How do you do input and output tables?
How do you do input and output tables? The rule for the input-output table below is: add 1.5 to each input number to find its corresponding output number. Use this rule to find the corresponding output numbers. To find each output number, add 1.5 to each input number. Then, write that output number in the […]
Why silicon is most widely used semiconductor material?
Why silicon is most widely used semiconductor material? Each Silicon atom is combined with four neighboring silicon atoms by four bonds. Silicon, a very common element, is used as the raw material of semiconductors because of its stable structure. Purification of Silicon consumes large amounts of power. Why silicon is most widely used? Silicon is […]
What does application of centrifugal air compressor lead to?
What does application of centrifugal air compressor lead to? A centrifugal compressor imparts kinetic energy into the airstream by increasing the velocity of the air using a rotating element and then converts this kinetic energy into potential energy in the form of pressure. How do centrifugal compressors work? A centrifugal compressor is a type of […]
What causes residual stress in welding?
What causes residual stress in welding? Welding residual stresses are caused by differential thermal expansion and contraction of the weld metal and parent material. This is illustrated in Fig. 7.5 for longitudinal residual stresses (transverse residual stresses are also induced, although these generally have compressive and tensile zones within the weld). What are residual stresses […]
What are the three types of communication protocols?
What are the three types of communication protocols? These are: Transmission Control Protocol (TCP) Internet Protocol (IP) User Datagram Protocol (UDP) Post office Protocol (POP) Simple mail transport Protocol (SMTP) File Transfer Protocol (FTP) Hyper Text Transfer Protocol (HTTP) Hyper Text Transfer Protocol Secure (HTTPS) What are protocols Name any 3 examples of protocols used […]
What should you use to clean hand tools?
What are the two most common types of PLC programming devices?
What are the two most common types of PLC programming devices? Power Supply; typically uses DC power to feed the modules plugged into the rack. What are the two most common types of PLC programming devices? Hand-held programming devices and PC’s. Explain the terms program and programming language as they apply to a PLC. Which […]
How does the temperature of the gas relate to the motion of the particles?
How does the temperature of the gas relate to the motion of the particles? Temperature is related to particle motion because temperature increases the motion of particles when it is applied to an object. When you add thermal energy to an object, the particles either move faster (increased kinetic energy) or spread farther apart,(increased potential […]
What is data in terms of database?
What is data in terms of database? Data, in the context of databases, refers to all the single items that are stored in a database, either individually or as a set. Data in a database is primarily stored in database tables, which are organized into columns that dictate the data types stored therein. What are […]