Interview Questions.

Top 100+ Pneumatic Interview Questions And Answers

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Top 100+ Pneumatic Interview Questions And Answers

Question 1. What Types Of Pneumatic Conveying Systems Are Typically Used?

Answer :

Essentially, there are  sorts of pneumatic conveying systems. In dilute segment structures, the solids are suspended in the carrier gas and transported to their vacation spot. In dense phase structures, the solids-to-gas ratio is a good deal better. The fuel in those structures acts greater like a piston to push the product to its very last vacation spot.

Dilute section structures are extra usual than dense segment structures because they are able to employ high-quality pressure displacement or a vaccum gadget. Dense section conveying is beneficial if the product degrades without problems (works at decrease velocities) or is especially abrasive.

Question 2. What Is The Most Common Carrier Gas Used In Pneumatic Conveying?

Answer :

While many programs make use of air as a carrier gasoline, others aren't desirable for the usage of air. For example, if the substance being conveyed reactions with moisture inside the air or if there's a chance of dust explosions, nitrogen is possibly choice.

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Question 3. What Are Some Common Problems Associated With Dense Phase Pneumatic Conveying?

Answer :

Dense phase pneumatic conveying, commonly reports one common trouble from gadget to machine: plugging in the line due to a malfunctioning booster valve.

Dense segment structures require these booster structures to introduce new, pressurized air. These boosters are almost usually observed by a check valve. If the take a look at valve becomes stuck, the product is permitted to plug the road.

Question four. What Are Some Common Problems Associated With Dilute Phase Pneumatic Conveying?

Answer :

Probably the most common trouble encountered in dilute segment pneumatic conveying is the wearing of the rotary valve that serves as an air lock where the product is delivered into the system. If extra air is authorized to pass via the rotary valve, this may cause bridging of the fabric the waft can be slowed or stopped.

Question 5. Why Would You Use Hydraulics Rather Than Pneumatics?

Answer :

Hydraulics is appropriate for better forces & specific motion than pneumatics. This is because hydraulic structures commonly run at extensively better pressures than pneumatics systems. Movements are greater precise (repeatable) because hydraulics makes use of an incompressible liquid to transfer electricity even as pneumatics uses gases.

Pneumatic systems have a few advantages too. They are generally substantially cheaper than hydraulic systems, can pass quicker (gasoline plenty much less viscous than oil) and do not leak oil in the event that they expand a leak.

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Question 6. How Can You Prevent Bridging In A Dilute Phase Pneumatic Conveying System?

Answer :

Manufacturers of these structures advise bin agitation or blowing air into the top of the feeding bin. These strategies can save you excellent particle from bridging close to the rotators valve. Two kinds of debris which can be especially prone to bridging consist of titanium dioxide and calcined- kaolin clay.

Question 7. What Is A “saltation Velocity” And How Is It Used In Designing Pneumatic Conveying Systems?

Answer :

In designing, the saltation velocity is used as a foundation for choosing the layout fuel speed in a pneumatic conveying machine. Usually, the saltation gas speed is improved by means of a issue, that's dependent on the character of the solids, to reach at a layout gas pace.

For example: the saltation pace thing for best particles can be approximately 2.5 whilst the thing may be as high as 5 for course particles such as soybeans ought to.

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Question 8. What Is The Practical Particle Size Limit For Pneumatic Conveying?

Answer :

As a rule, pneumatic conveying will paintings for debris up to 2 inches in diameter with a typical density. By “normal density

Question 9. What Is Pneumatic Conveying?

Answer :

Pneumatic conveying is a technique of shifting bulk solids from one location to some other with the help of a service gasoline. A differential pressure is implemented interior a conveying line. The glide always movements from a area of better to lower pressure.

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Question 10. What Are The Differences Between Pneumatics And Hydraulics?

Answer :

Working fluid: Pneumatics use air, Hydraulics use Oil
Power: Pneumatic energy much less than hydraulic energy
Size: P components are smaller than H additives
Leakage: Leaks in hydraulics motive fluid to be sticking across the components. In pneumatics, air is leaked into the surroundings.
Pneumatics obtain strength from an air compressor at the same time as hydraulics require a pump
Air is compressible, hydraulic oil is not
Question 11. Where Pneumatic System Is Used?

Answer :

Any device desires redundancy in paintings desires pneumatics, because the compressor of the pneumatic machine has periodical operations (intermittent paintings, no longer as hydraulic pump). The compressed air can be accumulated in tanks with excessive pressures and used even supposing the compressor failed.

Pheumatic machine is use in an software in which the burden is light. Because if the burden is heavy, pheumatic device ought to no longer be use & hydraulic system must be use as a substitute.

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Question 12. How Are The Pneumatic System And The Hydraulic System Similar?

Answer :

Pneumatics use gases consisting of air or nitrogen, hydraulics use oil or water, both systems use strain to act on a particular software.

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Question thirteen. What Is A Pneumatic System?

Answer :

Pneumatic machine is a system that makes use of air to power some thing. For example, have you ever seen the tube structures at bank power-up tellers? Air is used to push the tubes to and fro from the teller to the consumer.

Question 14. Why Would Some Industries Select Pneumatics Over Hydraulic?

Answer :

Actually, there may be want for air reservoir in industrial pneumatics systems. Hydraulics can manage more effective applications than pneumatics for the same general dimensions, or can be extra compact for the identical electricity.




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