Surge tanks are provided in high pressure water pipelines to
(A) Store a definite quantity of water all the time
(B) Reduce the water hammer
(C) Facilitate easy dismantling of pipeline for cleaning and maintenance
(D) None of these

1 Answer

Answer :

(B) Reduce the water hammer

Related questions

Description : Surge tanks are used  (A) For storage water  (B) To increase the velocity in a pipeline  (C) As overflow valves  (D) To guard against water hammer 

Last Answer : (D) To guard against water hammer 

Description : Water hammer in a pipeline results from the (A) Bursting of pipelines due to closure by a valve (B) Rapid pressure change due to a rapid change in the rate of flow (C) Pressure increase due to closure of a valve resulting in decrease in rate of flow (D) None of these

Last Answer : (B) Rapid pressure change due to a rapid change in the rate of flow

Description : Water hammer is caused in steam carrying pipelines, because of (A) Partial condensation of steam (B) Vibration of the pipeline (C) High degree of superheat of steam (D) Its exposure to torrential rain

Last Answer : (A) Partial condensation of steam

Description : Disc compensators are provided in large diameter fuel gas carrying pipelines to (A) Keep the pipe in proper orientation (B) Make the pipe joint leak-proof (C) Account for contraction/expansion ... due to temperature changes of the surroundings (D) Account for the pressure variation side the pipeline

Last Answer : (C) Account for contraction/expansion of pipe due to temperature changes of the surroundings

Description : Vent pipes are provided in a condenser to (A) Remove non-condensable gases (B) Purge the condenser (C) Facilitate easy cleaning of tubes (D) None of these

Last Answer : (A) Remove non-condensable gases

Description : Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation ... (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Last Answer : (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Description : Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is (A) Black (B) Silver grey (C) Green (D) Yellow

Last Answer : ) Silver grey

Description : __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently. (A) Collar (B) Flanged (C) Bell and Spigot (D) Expansion

Last Answer : Option B

Description : In a heat exchanger, floating head is provided to (A) Facilitate cleaning of the exchanger (B) Increase the heat transfer area (C) Relieve stresses caused by thermal expansion (D) Increase log mean temperature gradient

Last Answer : (C) Relieve stresses caused by thermal expansion

Description : The main function of baffles provided in a shell and tube heat exchanger is to (A) Facilitate the cleaning of outer tube surface (B) Enhance turbulence (C) Hold the tubes in position (D) All 'a', 'b' & 'c'

Last Answer : (B) Enhance turbulence

Description : Which of the following isn’t the property of a taper roller bearing? (a) High rigidity (b) Easy dismantling (c) Take low radial and heavy loads (d) It is unsuitable for high speed applications

Last Answer : (c) Take low radial and heavy loads

Description : Which of the following isn’t the property of taper roller? a) High rigidity b) Easy dismantling c) Take low radial and heavy loads d) All are the properties of tapper roller

Last Answer : c) Take low radial and heavy loads

Description : Describe the importance of pipelines in India. Name three important networks of pipeline transportation in the country. -SST 10th

Last Answer : Pipeline transport network is a new arrival on the transportation map of India.Earlier it was used to transport water but these days it is used for the following: (i) Transport of crude oil, ... Vijaipur in MP. It has branches to Kota in Rajasthan, Shahajahanpur, Babrala and other places in UP.

Description : The purpose of a surge tank is (A) To control the pressure variations due to rapid changes in the pipe line flow (B) To eliminate water hammer possibilities (C) To regulate flow of water to turbines by providing necessary retarding head of water (D) All of the above

Last Answer : Answer: Option D

Description : Baffles in mixing tanks are provided to (A) Reduce swirling and vortex formation (B) Increase the structural strength of the tank (C) Aid in rotational flow (D) None of these

Last Answer : (A) Reduce swirling and vortex formation

Description : Is hammer mill is similar to dummy type, but it is provided with aspirator for cleaning grains. A) True B) False

Last Answer : True

Description : Steam traps are provided in steam carrying pipelines to (A) Condense steam (B) Release excess steam pressure by bleeding steam (C) Remove condensate and inert gases (D) None of these

Last Answer : (C) Remove condensate and inert gases

Description : The ball bearings are provided with a cage (a) to reduce friction (b) to facilitate slipping of balls (c) to prevent the lubricant from flowing out (d) to maintain the balls at a fixed distance apart

Last Answer : (d) to maintain the balls at a fixed distance apart

Description : What is the importance of developing Chabahar Port by India? (1) India's trade with African countries will enormously increase. (2) India's relations with oil-producing Arab countries will be ... (4) Pakistan will facilitate and protect the installation of a gas pipeline between Iraq and India.

Last Answer : (3) India will not depend on Pakistan for access to Afghanistan and Central Asia. Explanation: In May 2016, India and Iran signed the "historic" Chabahar port agreement, which has the potential of becoming India's gateway to Afghanistan, Central Asia and Europe. So, C is the most fitting answer.

Description : Purpose of relief valve in a reciprocating pump is to (A) Protect the pump against developing excessive pressure (B) Facilitate unidirectional flow of liquid (C) Reduce the discharge pressure (D) Control the rate of discharge

Last Answer : (A) Protect the pump against developing excessive pressure

Description : The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the (A) ... (B) Heat of wetting (C) Integral heat of adsorption (D) None of these

Last Answer : (A) Differential heat of adsorption

Description : The purpose of adding Na2CO3 to water of low alkalinity is to (A) Permit the use of alum as a coagulant (B) Increase the softening capacity of zeolite (C) Facilitate easy regeneration of zeolite (D) All (A), (B) and (C)

Last Answer : (A) Permit the use of alum as a coagulant

Description : Width of the coke oven towards coke side is slightly more than that on pusher side to (A) Facilitate easy discharging of coke as it swells during carbonisation (B) Facilitate uniform heating of the oven (C) Increase the output of the coke (D) None of these

Last Answer : (A) Facilitate easy discharging of coke as it swells during carbonisation

Description : Coal is pulverised before burning in large capacity boiler furnaces mainly to (A) Ensure its complete combustion (B) Facilitate easy ash removal (C) Enhance its calorific value (D) Provide trouble free operation

Last Answer : (A) Ensure its complete combustion

Description : Pick up the incorrect statement from the following: A. Septic tanks are horizontal continuous flow type of sedimentation tanks B. Septic tanks are generally provided a detention period of 12 to 36 hours C ... covered and high vent shafts are provided for the escape of foul gases D. None of these

Last Answer : ANS: D

Description : Can oil companies send a certain quantity of oil through a pipeline?

Last Answer : You might learn more about the topic by simply googling “pipeline lease” and see where that takes you. It’s not a novel or even particularly unusual topic. I don’t know anything more about it than that “it’s a thing”, so I don’t know how it’s managed.

Description : What was Mexico's action towards dismantling the refuse of the Cold War?

Last Answer : Recycling scrap, rudimentary nuclear fuel grade enrichment. Cultivating relationships with former Soviet Bloc contries and selling oil to them.

Description : How Hitler started dismantling democratic rule in Germany? -History 9th

Last Answer : The Reichstag Fire Decree permitted the regime to arrest and incarcerate political opponents without specific charge, dissolve political organizations, and to suppress publications. It also gave the ... the authority to overrule state and local laws and overthrow state and local governments.

Description : Will upgrading my computer involve dismantling; disconnecting some of the internal components and connecting new ones again, requiring an expert to do the jobs or I can do it myself?

Last Answer : You can probably do it yourself, but you will have to muddle around with internal components.

Description : Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water column in case of mercury-water, differential manometer is ... mm). (A) H (B) 12.6 H (C) 13.6 H (D) 14.6 H

Last Answer : (B) 12.6 H

Description : The flow in a pipe or channel is said to be non-uniform when (A) The liquid particles at all sections have the same velocities (B) The liquid particles at different sections have different ... The quantity of liquid flowing per second is constant (D) Each liquid particle has a definite path

Last Answer : Answer: Option B

Description : The flow in a pipe or channel is said to be uniform when (A) The liquid particles at all sections have the same velocities (B) The liquid particles at different sections have different ... The quantity of liquid flowing per second is constant (D) Each liquid particle has a definite path

Last Answer : Answer: Option A

Description : Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because (A) Its calorific value is very less (B) Tar neutralises the residual acids ... for its transportation through pipelines at economic pressure drop (D) All (A), (B) and (C)

Last Answer : (C) It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop

Description : Prismatic compass is considered more accurate than a surveyor's compass, because (A) It is provided with a better magnetic needle (B) It is provided with a sliding glass in the object vane ( ... whole circle bearings (D) It is provided with a prism to facilitate reading of its graduated circle

Last Answer : (D) It is provided with a prism to facilitate reading of its graduated circle

Description : Routine maintenance of dry-type transformers should include ____________. A. cleaning the windings, if accessible, with a vacuum cleaner or very low pressure air B. measuring and recording the winding ... . making sure that the units are close to bulkheads or corners to protect them from damage

Last Answer : Answer: A

Description : A loss less transmission line having Surge Impedance Loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30%. Then, SIL of the compensated transmission line will be (A) 1835 MW (B) 2280 MW (C) 2725 MW (D) 3257 MW

Last Answer : A loss less transmission line having Surge Impedance Loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30%. Then, SIL of the compensated transmission line will be 2280 MW

Description : The main reason for establishing sales territories to 1. secure optimum market coverage 2. reduce selling expenses 3. facilitate planning and control of selling operations 4. improve sales force performance and morale 5. none of these

Last Answer : secure optimum market coverage

Description : From___Five Year Plan definite measures to reduce unemployment were undertaken. (a) First (b) Third © Fifth (d) Seventh

Last Answer : © Fifth

Description : Vacuum is generally maintained in the vapour space of an evaporator mainly to (A) Get economical temperature difference by using moderate pressure steam (B) Facilitate forward ... (C) Concentrate heat sensitive materials (D) Achieve very high concentration of the final product

Last Answer : (A) Get economical temperature difference by using moderate pressure steam

Description : Assertion A.: A free board of 0.3 m is provided above the top sewage line in septic tanks. Reason (R): It helps to accommodate the scum in the septic tank. A. Both A and R is true and R is the correct ... is not a correct explanation of A C. A is true but R is false D. A is false but R is true

Last Answer : ANS: A

Description : The bottom of the sewage inlet chamber of septic tanks, is provided an outward slope A. 1 in 5 B. 1 in 10 C. 1 in 15 D. 1 in 20

Last Answer : ANS: B

Description : In septic tanks, A. Free board of 0.3 m may be provided B. The baffles or tees are extended up to top level of scum C. The clear space between the baffle top and covering slab is about 7.5 cm D. All the above

Last Answer : ANS: D

Description : Which one of the following statements regarding septic tanks is wrong? A. A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided B. The outlet invert level is kept ... . The minimum width of septic level is 90 cm D. The depth of tank is kept equal to its width

Last Answer : ANS: D

Description : Skimming tanks are A. Used to remove the grease and oil B. Those from which sludge is skimmed out C. Tanks provided with self- cleansing screens D. Improved version of grit chambers

Last Answer : ANS: A

Description : What is the pipe called which lifts water from a reservoir to a greater height than the initial level in the supply reservoir? (A) Penstock (B) Siphon (C) Tunnel (D) Pressure pipeline

Last Answer : (B) Siphon

Description : Volute type of casing is provided in a centrifugal pump to (A) Convert velocity head to pressure head (B) Convert pressure head to velocity head (C) Reduce the discharge fluctuation (D) Increase the discharge

Last Answer : (D) Increase the discharge

Description : __________ is used for measuring the static pressure exerted on the wall by a fluid flowing parallel to the wall in a pipeline. (A) Venturimeter (B) Pressure gauge (C) Pitot tube (D) Orificemeter

Last Answer : (C) Pitot tube

Description : Boundary layer separation occurs when the (A) Pressure reaches a minimum (B) Cross-section of the channel is reduced (C) Valve is closed in a pipeline (D) Velocity of sound is reached

Last Answer : (B) Cross-section of the channel is reduced

Description : Hydraulic intensifier is used for increasing the (A) Rate of velocity of liquid supply (B) Rate of flow through delivery pipeline of a pump (C) Intensity of pressure of the liquid (D) Momentum rate through delivery pipe

Last Answer : (C) Intensity of pressure of the liquid