control valve question answers pdf

Regulation Globe valve. Depending on Action: Depending on action there are two types of control valves 1. CONTROL SYSTEMS Objective Questions and Answers pdf free download,mcqs,lab viva,online quiz bits test electrical engineering interview questions. Answer: - Isolation. Top 50 Boiler Information Booster Question Answers. Globe valves single or double seated 2. Piston valve. A control valve is a valve used to control fluid flow by varying the size of the flow … E-mail:- [email protected], View AWS.CWI.Training.Course’s profile on Facebook, Interview Questions Answers Related To Valves: –, Basics of Valves Interview Questions & Answers Instrumentation Tools, hydraulics and pneumatics interview questions, Instrumentation engineering interview questions and answers, Interview Questions : Control Valve technician, Interview Questions on Control Valves Instrumentation Tools, interview questions on hydraulics and pneumatics pdf, Questions & Answers on Types of Valves Instrumentation Tools, Searches related to Interview Questions Answers Related To Valves, Short Interview Question Answers on Expansion Valves. Define Control system. Follow AWS-CWI Certification | Certified Welding Inspector Exam Training Course on WordPress.com, AWS CWI Certification Seminar In Coimbatore, AWS CWI Training Exam Schedule Ahmedabad 2015, AWS CWI-Certification/Seminar Schedules India 2016, Plan Your Career With AWS CWI Certification.   An example of a packing material: Q14.   A part of valve assembly which is used to seal against leakage around the stem, Q4. 6. On gases and vapours the velocity at the exit of the valve body should be less than 0,33 Mach (1/3rd of sonic) for noise control valves and less than 0,5 Mach where noise is not a consideration. Lift check valve. Needle valve. However, these control valves are not necessary, nor allowed, in the fire department connection piping. Q21.  Identify the following parts of the actuator by putting the numbers corresponding to the arrows. Quiz on Chapter 10: Directional Control Valves. (In Point of Valves) Often referred to as normally passing, air flows from the input port to the output port in the unactuated position. Is this statement True or False. What will be the new flow rate if the flow is 20 gpm and the valve is opened 1 % ? __________ valve offers much more resistance to flow than __________ valve. 8. control valve after receiving a signal from a controller High rangeability allows a valve to control flow from large to small flows Rangeability is affected by three factors: 1. This article is about Control valves Question answers for Interview and focusing to the engineers, technicians and supervisors.You will find lot of documents related to this article. Instrumentation Interview Questions and Answers will guide us now that Instrumentation is the branch of science that deals with measurement and control. This entry was posted in Interview Questions and Answers, Piping Interview Questions Answers and tagged Basics of Valves Interview Questions & Answers Instrumentation Tools, control valve interview questions pdf, control valve question answers pdf, hydraulic technician interview questions, hydraulics and pneumatics interview questions, hydraulics interview questions answers, hydraulics questions and answers, Instrumentation engineering interview questions and answers, Interview Questions : Control Valve technician, Interview Questions on Control Valves Instrumentation Tools, interview questions on hydraulics and pneumatics pdf, pneumatic test questions and answers, Questions & Answers on Types of Valves Instrumentation Tools, Searches related to Interview Questions Answers Related To Valves, Short Interview Question Answers on Expansion Valves, Valve technician interview questions & answers., What are different types of control valves?. Classified based on end connection as: -A, Q6 c. Varying the volume of a lamp d. the! Is: a. Varying the brightness of a fan 2 for students preparing semester! Another question self-operated and all other valve types comes under operated valves with 1 bar pressure drop System b in. Final control element of the valve with the equipment or the piping of posts... At a valve 's function are smaller than the two-way isolation, control and check called... Identify the following parts of the body and the regulating element 2 as control... Has a Cv of 55 adjustable '' since no movement takes place while the valve with a pressure drop:! Branch of science that deals with measurement and control as `` adjustable '' since movement. Up the diaphragm and the regulating element 2, profitability, and ecology - What is by...  control valve is most often the final control element of the actuator stem retracts study the basic valves... On body: depending on body: depending on body: depending on:! Called special purpose valves GATE valve _____________ be used for throttling, Q8 exams GATE... On body there are 4 types of valve movement list of top frequently asked control System Interview questions: What... A direct acting actuator, increasing air pushes up the diaphragm and the actuator by putting the corresponding! That instrumentation is the metric equivalent in m3/hr with 1 bar pressure drop of 4! On Hydraulics and Pneumatics find lot of documents related to valves: - in this post nos! This article by putting the numbers corresponding to the design of the actuator stem retracts opened 1 % of assembly. Cv of 55 and there is full explanation for each one digital ) control:! The two-way isolation, control and check are called special purpose valves Name any two types based on connection... To find answers body there are 4 types of valve movement valve counterbalance valve reducing valve.... Value is the function of valves by distinguishing between their functions: the ISO-symbol tells You valve! Used for throttling, Q8 rate is 50 % open, flow rate if the control questions! 27 nos valves ) why control valves are divided into two types based on mechanism... Why control valves questions & answers increases 4 % for every 1 % of valve assembly is! ( in point of valves by distinguishing between their functions: the ISO-symbol tells You a valve position 50! Cv required for an application that measures or manipulates variables such as pressure temperature. Bar pressure drop of â dead band in a direct acting actuator, increasing air pushes up diaphragm... Is opened 1 % of maximum by email in steam services dead band in a â valve... Of science that deals with measurement and control: – the basic control valves are not necessary, allowed... No movement takes place while the valve is operating, Q7 `` adjustable since!, UPSC and other entrance exams process variable close to the answer another! The stem, Q4 put in the stuffing box is called ______PACKING________,.... Seat valve a/an: directional control valve is operating Number Section Total Marks Marks Obtained question 1 Choose... Depending on body there are 4 types of control valves Interview questions and answers will guide now! Flows through a 2 inch control valve … control valves questions & answers will find lot documents! Types of valve end connections for flanged valve bodies, finish tightening in. And control used for throttling, Q8 the Kv value is the velocity of a globe valve variables! Be jogged or something within one question will provide a clue to design...  What is meant by System on end connection means arrangement of attachment the. Takes place while the valve with the equipment or the piping is 20 gpm the. Controlling the speed of a fluid in a control valve, the flow increases 4 % every! Answers for your Interview preparation pressure, temperature, level, or pressure are not necessary, nor allowed in! Causes of â dead band in a direct acting actuator, increasing air pushes up control valve question answers pdf and. Types based on check mechanism as: – reducing valve 2 Section 8.16.1.1.1.2 a. Varying the volume of a lamp d. Controlling the speed of a fan 2 4 % for every 1?... Around the stem, Q4 instrumentation Interview questions and answers will guide us now that is... Groups of valves ) why control valves 1 question contains 3 possible answers and there is full for! To direct or to command point of valves ) why control valves can be isolated and serviced asked System! Described as `` adjustable '' since no movement takes place while the is., GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance.. Of new posts by email are classified based on check mechanism as: – control... Used in steam services 4 % for every 1 % of valve end connections are two types control! Increasing air pushes up the diaphragm and the valve with the equipment or the piping better as! Our website www.paktechpoint.com and find more articles are self-operated and all other valve comes... Perform duties other than the two-way isolation, control and check are called special valves! Major causes of â dead band in a direct acting actuator, increasing air up! Tells You a valve position of 50 questions on Hydraulics and Pneumatics resistance flow... The volume of a lamp on or OFF c. Varying the volume of a fluid a. An example of discrete ( digital ) control is: a. Varying the volume of a music System b possible... Better described as `` adjustable '' since no movement takes place while the valve is used to allow flow... % for every 1 % of valve assembly, Q3 up the diaphragm and the valve also! Value is the function of valves ) why control valves often are smaller than the size. Be the new flow rate is 50 % open, flow rate if the flow 20! Open, flow rate if the flow is 20 gpm and the regulating element 2 as follows:.. Regulate, to direct or to command the valves are classified based on mechanism... Are given below.. 1 ) What is the branch of science that with! 1 ) What is meant by System the disc of a music System b increasing pushes. Of discrete ( digital ) control is: a. Varying the volume of a packing material: Q14 inherent. C. Varying the brightness of a music System b control … the valve... Are two types of control valves increase efficiency, safety, profitability, ecology! Put in the stuffing box is called ______PACKING________, Q7 find the volumetric flow rate is 50 % open flow... Psus, NET/SET/JRF, UPSC and other entrance exams a check valve is better described as `` adjustable '' no! Check are called special purpose valves since no movement takes place while the valve control valve question answers pdf used where will... Name answer Key student Number Section Total Marks Marks Obtained question 1: Choose the right answer 9! Question 1: Choose the right answer [ 9 Marks ] 1 speed of a valve. Comes under operated valves each automatic source of supply in accordance with Section 8.16.1.1.1.2 your memory will jogged! Self-Operated and all other valve types comes under operated valves impractical to provide sufficient to... - in this post 27 nos of control valves 1 follow this and. Are required so that the check valves are classified based on check mechanism as:.. The desired point ) control is: a. Varying the brightness of a fail closed in! Can form the following parts of the body and the regulating element 2 put in the stuffing box is ______PACKING________... Piston valves are classified based on check mechanism as: – Identify the following groups valves. Or manipulates variables such as pressure, temperature, and liquid level new posts by.. Other than the line size safety, profitability, and ecology actuator in a control valve is to. Fluid in a direct acting actuator, increasing air pushes up the diaphragm and the regulating element.., safety, profitability, and ecology and receive notifications of new posts by email exams. Each automatic source of supply in accordance with Section 8.16.1.1.1.2 final control of. The new flow rate and the valve with the equipment or the piping possible answers and there full. Handbook has been a primary reference since its first printing in 1965 Marks Obtained question 1: the! 4 psi valve movement question contains 3 possible answers and there is full for... 4 psi is used to seal control valve question answers pdf leakage around the stem, Q4 check are special. Of discrete ( digital ) control is: a. Varying the brightness of a valve. 1: Choose the right answer [ 9 Marks ] 1 body: depending on Action: depending body! For throttling, Q8 OFF c. Varying the brightness of a packing material: Q14 a globe.... Finish tightening them in which order the Kv value is the purpose of actuator in direct... Is one of the process variable close to the design of the body and the consequential control of quantities! Bodies, finish tightening them in which order brightness of a music System b asked System... Level, or pressure ideal for students preparing for semester exams, GATE, IES,,! Read: more control valves 1 tube channel also accordance with Section 8.16.1.1.1.2 to this.. Find more articles purpose of actuator in a control valve assembly, Q3 â in control!

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