When brazing the lowest effective brazing temperatures possible should be used to minimize the effects of heat on the base metal?

1 Answer

Answer :

Yes, that is proper technique.

Related questions

Description : Brazing filler metal used for joining steel plates (A) Melts below the melting points of base metals (B) Melts below 300°C (C) Is copper phosphorous alloy

Last Answer : (A) Melts below the melting points of base metals

Description : Brazing is the joining of metals (A) Without melting the base metal (B) With a non-ferrous filler (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : Option C

Description : Out of the following, the joint produced by __________ has the lowest strength. (A) Soldering (B) Welding (C) Brazing (D) Riveting

Last Answer : (A) Soldering

Description : The largest consumption of zinc for alloys is in the making of (A) Bearing metal (B) Brasses (C) Brazing solder

Last Answer : (B) Brasses

Description : Which of the manufacturing processes is/are required to make a typical stainless steel spoon out of sheet metal? A. Casting B. Forming C. Brazing D. Blow moulding

Last Answer : Forming

Description : For a shortened vertical antenna, where should a loading coil be placed to minimize losses and produce the most effective performance? A. As low as possible on the vertical radiator B. Near the center of the vertical radiator C. As close to the transmitter as possible D. At a voltage node

Last Answer : B. Near the center of the vertical radiator

Description : How can you minimize the harmful effects of a typhoon?

Last Answer : How can you help minimize the harmful effect of a typhoon

Description : Minimize the Effects of Asthma to Lead an Active Life?

Last Answer : The effects of Asthma, a chronic respiratory condition, can limit physical activity by making everyday breathing a chore. People who have asthma may experience a constriction of their airways during ... avoiding dangerous triggers is an important step in leading an active, healthy life with asthma.

Description : is the Objective of the energy management from the following :- a) To give each product a label b) To evolve minimum energy consumption c) To minimize environmental effects d) To achieve optimum energy procurement

Last Answer :  To evolve minimum energy consumption 

Description : The objective of energy management is ____ A. To achieve and maintain optimum energy procurement and utilization throughout the organization B. To minimize the energy cost without affecting production and quality C. To minimize the environmental effects D. All of the above

Last Answer : All of the above

Description : What is the lowest-light plant that will also tolerate temperatures down to (but not necessarily below) freezing?

Last Answer : Lichen?You can find it out on the tundra…;)

Description : What is the lowest temperatures recorded in the world -Do You Know?

Last Answer : -89.2°C (-128.6°F)

Description : What are the lowest temperatures in Ningbo, China at the end of March?

Last Answer : Temperatures in March in Ningbo are still a bit cold. Usually oscillating between 11 and 6 centigrade, being 5 centigrade normally the coldest it can get. If you're planning to visit Ningbo during this time ... can also get a little windy during this month, but not as much as in January or February.

Description : Definition of energy management given by cape hart , turner and Kennedy is ____ A. The Judicious and effective use of energy to maximize profits and enhance competitive position B. The Judicious and ... The systematic approach for decision making in area of energy management. D. All of the above

Last Answer : The Judicious and effective use of energy to maximize profits and enhance competitive position

Description : Why is the extraction a very important part of the brazing hearth set up?

Last Answer : The fumes that are extracted via extraction are seriouslyharmful to our lungs.

Description : What is soldering and what is brazing?

Last Answer : Soldering is the process of joining two metals with an alloy whose melting point is less that of the materials to be soldered. Soldering at high temperature using brass as solder is called brazing or hard ... soft solder) is tin 60% and lead 40%. Its melting point is 190°C and is widely used.  

Description : . Lap joints are preferred over butt joints in soldering/brazing, because these joints are (A) Weaker in tension but stronger in shear (B) Weaker in shear but stronger in tension (C) Stronger in both shear and tension (D) The lap joints are easily made

Last Answer : r: Option D

Description : Pick up the correct statement from the following: (A) Solder material is an alloy which melts at a temperature above 400°C (B) Brazing is done at temperature above 600°C to 1100°C (C) Brazing joint is stronger than the solder joint (D) All the above

Last Answer : Answer: Option D

Description : Describe briefly soldering and brazing operation.

Last Answer : Soldering: It is a method of joining two or more pieces of metal sheets by means of a fusible alloy or metal , called solder, applied in the molten state. The melting point of the ... by metallic bonding. Copper, Copper alloys, Silver alloys and Aluminium alloys are used for brazing process. 

Description : Compare Brazing and Soldering on the basis of : (i) Temperature Used. (ii) Filler Material. (iii) Joint Strength (iv) Applications.

Last Answer : Comparison of Brazing and Soldering:

Description : Define brazing.  

Last Answer : Brazing: It is a metal joining process in which two or more metal items are joined together by melting and flowing a filler metal into the joint, the filler metal having a lower melting point than the adjoining metal. 

Description : Differentiate between soldering and brazing

Last Answer : Answer: Comparison of brazing and soldering

Description : Define the terms: i) Hardness ii) Toughness iii) Brazing iv) Machinability

Last Answer : i) Hardness:- Hardness is the property of metal possessed by a material which enables it to resist penetration or abrasion or scratching by other material. Diamond is the hardest of known materials.  ... can be easily cut by cutting tools to produce a desired shape & surface finish on its surface

Description : In planning and construction of a cast metal partial denture the study cast, M07 A. facilitate the construction of custom/special trays B. minimize the need for articulating C. provide only ... best assessed clinically D. can be used as a working cast when duplicating facilities are not available

Last Answer : A. facilitate the construction of custom/special trays

Description : To minimize magnetic field interaction between electrical conductors in physical proximity, it is best to keep them ___________________. A. parallel and as close as possible to each other B. at right angles ... practicable from each other D. at right angles and as far as practicable from each other

Last Answer : Answer: D

Description : Point out the wrong statement. CSE-R17.BLOGSPOT.COM a) SOA provides the standards that transport the messages and makes the infrastructure to support it possible b) SOA provides access ... and widely shareable components that can minimize developer and infrastructure costs d) None of the mentioned

Last Answer : SOA provides access to reusable Web services over an SMTP network

Description : Point out the wrong statement. a) SOA provides the standards that transport the messages and makes the infrastructure to support it possible b) SOA provides access to reusable Web services ... widely shareable components that can minimize developer and infrastructure costs d) None of the mentioned

Last Answer : SOA provides access to reusable Web services over an SMTP network

Description : If, having tried all normal methods, the ears cannot be cleared in flight, the following action should be taken: a. Ignore and it will go away b. Descend to 10,000ft or MSA – whichever is higher c. Seek medical advice as soon as possible d. Descend as quickly as possible to minimize pain

Last Answer : c. Seek medical advice as soon as possible

Description : If, having tried all normal methods, the ears cannot be cleared in flight, the following action should be taken: a. Ignore and it will go away b. Descend to 10,000ft or MSA – whichever is higher c. Seek medical advice as soon as possible d. Descend as quickly as possible to minimize pain

Last Answer : c. Seek medical advice as soon as possible

Description : What ice melt will be effective on my driveway at very low temperatures, while doing very little damge to my lawn.

Last Answer : Kitty litter works but it is expensive.

Description : Three of the following statements about enzymes are correct and one is wrong. Which one is wrong? (a) Enzymes require optimum pH for maximal activity. (b) Enzymes are denatured at high temperature but ... - 90°C. (c) Enzymes are highly specific. (d) Most enzymes are proteins but some are lipids.

Last Answer : (d) Most enzymes are proteins but some are lipids.

Description : Pick out the wrong statement. (A) Addition of methane to the furnace atmosphere reduces decarburising by hydrogen (B) Nitrogen in presence of steam decor-burises high carbon steel, whereas hydrocarbon ... the metal surface) cause nitride formation with increase in surface hardness (D) None of these

Last Answer : (D) None of these

Description : Four identical samples of a metal are heated to different temperatures. Based on the colors of their incandescences, which sample is the hottest? The sample that is: w) blue-white x) bright red y) yellow z) orange

Last Answer : ANSWER: W -- BLUE-WHITE

Description : Cold cracking in the heat affected zone of a high strength steel weld can take place because of the (A) Retained austenite (B) Martensite formation (C) Relatively high sulphur content in the base metal (D) Sufficient hydrogen present in the welding arc

Last Answer : (B) Martensite formation

Description : At lower temperatures and pressures, the latent heat of vaporization of a refrigerant (a) decreases (b) increases (c) remains same (d) depends on other factors

Last Answer : Ans: b

Description : The direction of heat flow between two objects depends on - (1) Their masses (2) Their heat contents (3) Their temperatures (4) Whether they are in solid, liquid or gaseous state

Last Answer : (3) Their temperatures Explanation: Heat always flows from a body at higher temperature to a body at a lower temperature.

Description : The study of phenomena at very low temperatures is called - (1) heat transfer (2) morphology (3) crystallography (4) cryogenics

Last Answer : (4) cryogenics Explanation: A person who studies elements that have been subjected to extremely cold temperatures is called a cryogenicist.

Description : Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above __________ °C, because corrosion prevails at higher temperatures. (A) 350 (B) 750 (C) 1050 (D) 1250

Last Answer : (B) 750

Description : Pick out the wrong statement. (A) Theoretical flame temperature is the temperature attained by the products of combustion, when the fuel is burned without loss or gain of heat (B) ... flame temperature (D) Adiabatic flame temperatures of actual combustions are always less than the maximum values

Last Answer : (C) Burning the fuel with excess pure oxygen results in maximum theoretical flame temperature

Description : A thermoelectric engine which consists of two dissimilar electric conductors connected at two junctions maintained at different temperatures, converts (a) Electric energy into heat energy [IES-2006] (b ... energy (c) Mechanical work into electric energy (d) Electric energy into mechanical work  

Last Answer : (b) Heat energy into electric energy  

Description : The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1- T2)/T1. The co efficient of performance (C.O.P.) of a Carnot heat pump operating between T1 and T2is given by (A) T1/(T1-T2) (B) T2/(T1-T2) (C) T1/T2 (D) T2/R1

Last Answer : (A) T1/(T1-T2)

Description : If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the (A) Maxwell's equation (B) Clausius-Clapeyron Equation (C) Van Laar equation (D) Nernst Heat Theorem

Last Answer : B) Clausius-Clapeyron Equation

Description : Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the (A) Two temperatures only (B) Pressure of working fluid (C) Mass of the working fluid (D) Mass and pressure both of the working fluid

Last Answer : (A) Two temperatures only

Description : The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2(when, T1 > T2) is given by (T1- T2)/T1. The co efficient of performance (CO.P.) of a Carnot heat pump operating between T1 and T2is given by (A) T1/(T1-T2) (B) T2/(T1-T2) (C) T1/T2 (D) T2/T1

Last Answer : (B) T2/(T1-T2)

Description : Secondary hardening in steels arises out of the (A) Precipitation of fine alloy carbides at high temperatures (B) Refinement of ferrite grain size by working (C) Decomposition of retained austenite upon heat treatment (D) Precipitation of complex inter-metallic upon heat treatment

Last Answer : Option C

Description : What predicts the approximate molar specific heat at high temperatures from the atomic weight?  A. Third law of thermodynamics  B. Law of Dulong and Petit  C. Mollier diagram  D. Pressure-enthalpy diagram

Last Answer : Law of Dulong and Petit

Description : For heat engine operating between two temperatures (T1>T2), what is the maximum efficiency attainable?  A. Eff = 1 – (T2/T1)  B. Eff = 1 - (T1/T2)  C. Eff = T1 - T2  D. Eff = 1 - (T2/T1)^2

Last Answer : Eff = 1 – (T2/T1)

Description : Which law states that the specific heat of a gas remains constant at all temperatures and pressures  (a) Charles’ Law  (b) Joule’s Law  (c) Regnault’s Law  (d) Boyle’s Law  (e) there is no such law.

Last Answer : Answer : c

Description : Which of the following statements regarding evacuated tube collectors (ETC) are true? i) ETC is used for high temperatures upto 150oC ii) because of use of vacuum between two concentric glass tube, higher amount of heat is ... upon the ambient temperature i & iii b) ii & iii c) i & iv d) i & ii

Last Answer : d) i & ii

Description : Cryogenics is: (1) A scientific study of dust (2) Study of heat (3) Scientific study of very low temperatures (4) Study of genesis

Last Answer : Scientific study of very low temperatures