How do I know what size vacuum pump I need? The size of the vacuum pump is determined by both how deep the vacuum you need and how much gas is in or is going through the chamber (or leaking into it). What type of pump is a vacuum pump? There are two basic categories […]
What is the best type of ventilation for welding?
What is the best type of ventilation for welding? Ventilation strategies fall into three general categories: Natural Dilution Ventilation (least effective) Mechanical Dilution Ventilation. Local Exhaust Ventilation (most effective) What is the safety device used during arc welding? A welding helmet or hand shield with filter plate and cover plate is mandatory for eye protection […]
Is Relative humidity a percentage?
Is Relative humidity a percentage? Relative humidity is measured as a percentage or ratio of the amount of water vapor in a volume of air RELATIVE to a given temperature and the amount it can hold at that given temperature. When humidity is expressed as a percentage it is called? When humidity is expressed in […]
What are condition monitoring techniques used for machines?
What are condition monitoring techniques used for machines? Thermography is the study of heat patterns in machines and objects. Images capture thermal radiation patterns emitted from equipment. Data analysis is used to identify potential failures or degradation of equipment parts. Generally, equipment and parts will heat as parts failure is developing. What is condition monitoring […]
What is counter flow heat exchanger?
What is counter flow heat exchanger? A counter-flow heat exchanger is one in which the direction of the flow of one of the working fluids is opposite to the direction to the flow of the other fluid. Second, the temperature of the cold fluid exiting the heat exchanger never exceeds the lowest temperature of the […]
What allows the axle to turn the wheels at different speeds?
What allows the axle to turn the wheels at different speeds? The open differential is the oldest of its kind, and it allows each of the vehicle’s wheels to rotate at different speeds. A locked differential ensures both wheels on the same axle rotate at the same speed. It’s often found in all-wheel drive vehicles. […]
Why is it called float glass?
Why is it called float glass? It is called “float glass” because of the process by which it was formed; literally floating the liquid glass over liquid tin and slowly cooling it (referred to as annealing) to become what we commonly call “plate glass.” What is meant by float glass? Float glass is a sheet […]
How do you calculate braking effective pressure?
How do you calculate braking effective pressure? BMEP = (Torque x 75.4) / (Displacement x PPR) It is also clear that because the equation includes PPR ( Power Pulses per Revolution ), it applies to engines with any number of cylinders by using the total displacement, total brake torque, and correct PPR. What is meant […]
How do you calculate frequency response?
How do you calculate frequency response? In fact the frequency response of a system is simply its transfer function as evaluated by substituting s = jω. The frequency response H(jω) is in general is complex, with real and imaginary parts. This is often more useful and intuitive when expressed in polar coordinate. What is the […]
What happens if a client device connects to a shared printer and discovers that the print driver is not current on the client device?
What happens if a client device connects to a shared printer and discovers that the print driver is not current on the client device? What happens if a client device connects to a shared printer and discovers that the print driver is not current on the client device? The client will update the driver used […]