Description : What are some commoWhat are some common problems associated with dilute phase pneumatic conveying?
Last Answer : Probably the most common problem encountered in dilute phase pneumatic conveying is the wearing of the rotary valve that serves as an air lock where the product is introduced into the system. If excess ... rotary valve, this can cause bridging of the material the flow can be slowed or stopped.
Description : What are some common problems associated with dense phase pneumatic conveying?
Last Answer : Dense phase pneumatic conveying, typically experiences one common problem from system to system: plugging in the line due to a malfunctioning booster valve. Dense phase systems require these booster systems to ... valve. If the check valve becomes stuck, the product is allowed to plug the line.
Description : The capacity of a pneumatic conveying system depends upon the (A) Bulk density of materials (B) Pressure of the conveying air (C) Diameter of the conveying line (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : How can you prevent bridging in a dilute phase pneumatic conveying system?
Last Answer : Manufacturers of these systems recommend bin agitation or blowing air into the top of the feeding bin. These methods can prevent fine particle from bridging near the rotators valve. Two types of particles that are especially prone to bridging include titanium dioxide and calcined- kaolin clay.
Description : What types of pneumatic conveying systems are typically used?
Last Answer : Essentially, there are two types of pneumatic conveying systems. In dilute phase systems, the solids are suspended in the carrier gas and transported to their destination. In dense phase systems, ... is useful if the product degrades easily (works at lower velocities) or is particularly abrasive.
Description : What is pneumatic conveying?
Last Answer : Pneumatic conveying is a method of moving bulk solids from one place to another with the help of a carrier gas. A differential pressure is applied inside a conveying line. The flow always moves from a region of higher to lower pressure.
Description : What is the practical particle size limit for pneumatic conveying?
Last Answer : As a rule, pneumatic conveying will work for particles up to 2 inches in diameter with a typical density. By “typical density”, we mean that a 2 inch particle of a polymer resin can be moved via pneumatic conveying, but a 2 inch lead ball would not.
Description : What is a “saltation velocity” and how is it used in designing pneumatic conveying systems?
Last Answer : The saltation velocity is defined as the actual gas velocity (in a horizontal pipe run) at which the particles of a homogeneous solid flow will start to fall out of the gas stream. In designing, the ... 2.5 while the factor could be as high as five for course particles such as soybeans could.
Description : Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of ‘scrappers’? (A) Bucket conveyor (B) Flight conveyor (C) Screw conveyor (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Material of construction of pipe generally used for conveying water in India is (A) Stainless steel (B) Cast iron (C) Wrought iron (D) Lead lined steel
Last Answer : (B) Cast iron
Description : "People should respect you for who you are." What is a better way of conveying the message?
Last Answer : Nobody will respect you for what you are not.
Description : i. Process of communication, conveying a message in spoken form. ii. A set of interconnected web pages located on a single web domain.
Last Answer : Write a word or a term or a phrase that can substitute each of the following statement: i ... . vi. Audio-Visual means of electronic communication.
Description : Mark the correct option a) Branch lines which radiate from head offices and large sub-offices connecting them with less important sub and branch offices in the interior of districts, or lines which ... unbridged streams and rivers, and for carrying them over difficult roads. d) All the above
Last Answer : d) All the above
Description : Which of the following groups of individuals may stare at the floor during conversations as a sign of respect? a) Native Americans Some Native Americans stare at the floor during conversations ... impolite or aggressive. d) Asians Asians may consider direct eye contact impolite or aggressive.
Last Answer : a) Native Americans Some Native Americans stare at the floor during conversations, conveying respect and indicating that the listener is paying close attention to the speaker.
Description : 349- Pods, heads or ears & freeseeds, lost during the cutting & conveying operation are called as..... (a) Cylinder loss (b) Walker losses ( rack loss) (c) Shoe losses (d) Gathering loss
Last Answer : (d) Gathering loss
Description : Pods, heads or ears and free seeds, lost during the cutting and conveying operations are called as (a)cylinder loss (b) walker loss (rack loss) (c)shoe losses (d)gathering loss
Last Answer : (d)gathering loss
Description : Vertical transportation of materials can be done by a/an (A) Apron conveyor (B) Pneumatic conveyor (C) Bucket elevator (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : The most suitable equipment for the transportation of 200 mesh size particles is a (A) Bucket elevator (B) Pneumatic conveyor (C) Screw conveyor (D) Belt conveyor
Last Answer : (B) Pneumatic conveyor
Description : For the transportation of ultrafine particles, the equipment used is a __________ conveyor. (A) Belt (B) Pneumatic (C) Screw (D) None of these
Last Answer : (B) Pneumatic
Description : Which is the most suitable conveyor for transportation of sticky material? (A) Apron conveyor (B) Belt conveyor (C) Screw conveyor (D) Pneumatic conveyo
Last Answer : (C) Screw conveyor
Description : For pumping slurry, one can use a __________ pump. (A) Reciprocating (B) Diaphragm (C) Centrifugal (D) Pneumatic
Last Answer : (B) Diaphragm
Description : How does the pneumatic valve work as the flow changes?
Last Answer : Through pressure differentials.
Description : Hollow air - filled bones ( pneumatic bones ) occurs in
Last Answer : Hollow air - filled bones ( pneumatic bones ) occurs in A. Mammals B. Urodela C. Reptiles D. Aves
Description : Pneumatic bones occur in
Last Answer : Pneumatic bones occur in A. Amphibians B. Reptile C. Birds D. Mammals
Description : Pneumatic bones, four chambered heart and feathers occur in
Last Answer : Pneumatic bones, four chambered heart and feathers occur in A. Cyclostmata B. Aves C. Mammilia D. Reptilia
Description : Where can I find a pneumatic jumping spider prop for my yard haunt?
Last Answer : You can find a lot of "How To" videos on making your own pneumatic jumping spider. Here is a link to a great how to build a jumping spider; http://www.YouTube.com/watch?v=iY3NZA5ZA2c.
Description : Are all air valves pneumatic?
Last Answer : Pneumatic is defined as air driven and therefore the two terms are synonomous. However pneumatic is not as frequently used in describing a valve.
Description : How do pneumatic tube systems work?
Last Answer : Pneumatic tube systems today are most seen at the drive-through windows of banks. Pneumatic tubes use pressured air to push a sealed object through the system. how do pneumatic truck trailers work?
Description : What is the function of a pneumatic actuator?
Last Answer : A pneumatic actuator converts energy.The energy is used to make different types of motions.
Description : What machines use pneumatic tube systems?
Last Answer : A variety of automation systems use pneumatic tubes to move material via puffs of air. Bank systems still use them. In the Denver Airport, large pneumatic tubes move aircraft parts around the terminals.
Description : Where would I purchase a pneumatic stapler?
Last Answer : Home Depot is definitely a good place to begin researching and price checking storage tubs. Their website offers a buying guide that may be useful: http://www.newegg.com/Product/Product.aspx? ... that you are interested, compare prices at Lowes, Walmart, Target and other home improvement stores.
Description : Where can I find a pneumatic stapler?
Last Answer : Clothing racks can be purchased online. Two great options are websites that specialize in store supply products and Amazon.com, which offers a variety of products related to store supply.
Description : External pneumatic compression has been advocated for the prevention of deep venous thrombosis during operative procedures. Which of the following statement(s) concerning the use of external pneumatic ... includes through the operation and for at least several days in the postoperative period
Last Answer : Answer: b, c, d In many well-controlled studies of venous prophylaxis, intermittent pneumatic compression has been found to be as effective as low-dose heparin therapy. In addition to augmentation ... be used through the operation and for at least five days in the face or prolonged immobilization
Description : All of the following may be useful in the treatment of cardiogenic shock except: A. Dobutamine. B. Sodium nitroprusside. C. Pneumatic antishock garment. D. Intra-aortic balloon pump.
Last Answer : Answer: C DISCUSSION: Cardiogenic shock occurs when the heart fails to generate adequate cardiac output to maintain tissue perfusion. Intrinsic causes such as myocardial dysfunction secondary ... ), which causes an increase in systemic vascular resistance, is contraindicated in cardiogenic shock
Description : What are pneumatic bones?
Last Answer : Birds have lightweighted bones with internal spaces filled with air. These bones are called pneumatic bones. This feature reduces the corporal density of the animal facilitating the flight. Image Diversity: pneumatic bones
Description : Bones are pneumatic in - (1) Fishes (2) Amphibians (3) Reptiles (4) Birds
Last Answer : (4) Birds Explanation: Pneumatic boneis is hollow bone filled with air, connected to the respiratory system. Many of a bird's bones are pneumatic, with struts across their ... , certain physical characteristics are required. Flying birds have evolved reduced weight through several characteristics.
Description : The non-clog pump which permits solid matter to pass out with the liquid sewage, is A. Centrifugal pump B. Reciprocating pump C. Pneumatic ejector D. None of these
Last Answer : ANS: A
Description : The disintegrating pump in which solid matter is broken up before passing out, is A. Centrifugal pump B. Reciprocating pump C. Pneumatic ejector D. None of these
Description : Q No: 131 The most widely used pump for lifting sewage is A. Centrifugal pump B. Reciprocating pump C. Pneumatic ejector D. Air pressure pump
Description : Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is? A. Centrifugal pump B. Pneumatic ejector C. Reciprocating pump D. None of these
Description : The devices marked 'T' in the illustration are _____________. EL-0080 A. trouble alarm units whose contacts activate when problems arise either on starting or stopping of the motor B. topping ... contactor parts whose contacts start and stop the defrosting cycle of the compressor driven by the motor
Last Answer : Answer: C
Description : In which class of vertebrates pneumatic bones are found? Mention any one of its advantage.
Last Answer : Pneumatic bones are found in class aves. It makes the body very light and fly without friction
Last Answer : Hollow, light, air filled bones of birds are called pneumatic bones.
Description : Which of the following terms refers to the use of compressed gasses to drive (power) the robot device? a) pneumatic b) hydraulic c) piezoelectric d) photosensitive
Last Answer : a) pneumatic
Description : Which type of actuator generates a good deal of power but tends to be messy? a) electric b) hydraulic c) pneumatic d) both hydraulic & pneumatic
Last Answer : b) hydraulic
Description : With regard to the physics of power systems used operate robots, which statement or statements are most correct? A : hydraulics involves the compression of liquids B : hydraulics involves the compression of air C : pneumatic involves the compression of air D : chemical batteries produce AC power
Last Answer : C : pneumatic involves the compression of air
Description : .Pneumatic bone is found in (a) shark (b) Rana (c) pigeon (d) whale
Last Answer : (c) pigeon