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# Mechanical Engineering

Abhishek Govil asked   •  2 minutes ago

## For two governors A and B, the lift of sleeve of governor A is more than that of governor B, fora given fractional change in speed. It indicates thata)governor A is more sensitive than governor Bb)governor B is more sensitive than governor Ac)both governor A and B are equally sensitived)none of the aboveCorrect answer is option 'A'. Can you explain this answer?

Hardik Barot asked   •  5 minutes ago

## When a gear and pinion are made of same material the design is based on.a)Gearb)Both gear and pinionc)Piniond)The one having smaller moduleCorrect answer is option 'C'. Can you explain this answer?

Nilesh Dalai asked   •  6 minutes ago

## Select the wrong statement:a)natural rubber is an elastic material present in the latex of certain plantsb)paints contain no pigmentsc)concrete is extremely weak in tensiond)mineral wool is used for heat insulation in high temperature furnacesCorrect answer is option 'B'. Can you explain this answer?

Tanuja Kumari asked   •  6 minutes ago

## The discharge through a large rectangular orifice is given bywhere H1= Height of the liquid above the top of the orifice,H2= Height of the liquid abvoe the bottom of the orifice,b = Breadth of the orifice, andCd= Coefficient of dischargea)b)c)d)Correct answer is option 'C'. Can you explain this answer?

Sri Jay asked   •  11 minutes ago

## A flange of radius 200mm is fastened to the machine screw by means of four cap screws of pitch circle radius 150mm the external force p is 20kn which is loaded at 160mm from the machine screw there are two dowel pins to take ... more

Praj Kta asked   •  18 minutes ago

## For triangle ABC the side AB represents magnitude of force and altitude of triangle represents moment arm from moment centre C then moment about C is ____.?

Osler Ruskin asked   •  21 minutes ago

## the dimentions of entropy is (q - Temperature)a)MLT-2 qb)ML2T-1q-1c)ML2T-2q-1d)ML3T-2q-1Correct answer is option 'C'. Can you explain this answer?

Pushplata Pathak asked   •  22 minutes ago

## If given data velocity = 5m/s ,density =1000 kg/m3 ,diameter =400 my, dynamic viscosity =0.89 Ns/m2 find Reynolds number and type of flow?

Nikki Patel asked   •  29 minutes ago

## A cam operating a knife edge follower having a lift of 30mm. The cam rises the follower with SHM for 150 degree of its rotation followed by a period of dwell of 60 degree.The follower decends for the nest 100 degree rotation ... more

Roni Modi asked   •  33 minutes ago

## Which one of the following expressions for Tds is true for a simple compressible substance ?(Notation have the usual meaning)a)dh - vdpb)dh + vdpc)dh - pdvd)dh + pdvCorrect answer is option 'A'. Can you explain this answer?

Sai Kiran D asked   •  49 minutes ago

## A manufacturing firm has a fixed cost of?

Himanshu Chaudhary asked   •  52 minutes ago

## Which of the following is the unit of kinematic viscosity ?a)pascalb)poisec)stoked)faradaye)none of the aboveCorrect answer is option 'C'. Can you explain this answer?

Abhishek Govil asked   •  55 minutes ago

## The mechanism used in a shaping machine isa)a closed 4-bar chain having 4 revolute pairsb)a closed 6-bar chain having 6 revolute pairsc)a closed 4-bar chain having 2 revolute and 2 sliding pairsd)an inversion of the single slider crank chainCorrect answer is option 'D'. Can you explain this answer?

Mohd Vaseem asked   •  59 minutes ago

## Newton's law of viscosity is a relationship betweena)shear stress and the rate of angular distortionb)shear stress and viscosityc)shear stress, velocity and viscosityd)pressure, velocity and viscositye)shear stress, pressure and rate of angular distortion.Correct answer is option 'A'. Can you explain this answer?

Dharmendra Singh asked   •  1 hour ago

## Match List I (Physical properties of fluid) with List II (Dimensions/definitions) and select thecorrect answer using the codes given below the lista)Ab)Bc)Cd)DCorrect answer is option 'D'. Can you explain this answer?

Shubham Pandey asked   •  1 hour ago

## Assertion (A): Efficiency of a reversible engine operating between temperature limits T1 and T2 is maximum.Reason (R): Efficiency of a reversible engine is greater than that of an irreversible engine.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?

Vipin Kumar asked   •  1 hour ago

## Turbine is tripped when thea)pressure at inlet increaseb)speed shoots upc)blades are erodedd)mass flow increasesCorrect answer is option 'B'. Can you explain this answer?

Shubham Kumar asked   •  1 hour ago

## The intake charge in a diesel engine consists ofa)air aloneb)air + lubricating oilc)air + fueld)air + fuel + lubricating oilCorrect answer is option 'A'. Can you explain this answer?

Wasi Khan asked   •  1 hour ago

## By conjugate beam method, the slope at any section of an actual beam is equal to :a)EI times the S.F. of the conjugate beamb)EI times the B.M. of the conjugate beamc)S.F. of conjugate beamd)B.M. of the conjugate beamCorrect answer is option 'C'. Can you explain this answer?

suvesh bajpai asked   •  1 hour ago

## A length of 10 mm diameter steel wire is coiled to a close coiled helical spring having 8 coils of 75 mm mean diameter, and the spring has a stiffness K. If the same length of wire is coiled to 10 coils of 60 mm mean diameter, then the spring stiffness will be a) Kb) 1.25 Kc) 1.56 Kd) 1.96 kCorrect answer is option 'C'. Can you explain this answer?

Dipti Chorghade asked   •  1 hour ago

## Find the map.strest on the section AB of the damp when a thrust of 3000m is exerted by the screw the section is rectangular 3cm×1.2cm?

Pawan Tiwari asked   •  1 hour ago

## Direction: Each of the next consists of two statements, one labeled as the 'Assertion (A)' andthe other as 'Reason (R)'. You are to examine these two statements carefully and select the answers to these items using the codes given below:Codes:(a) Both A and R are individually true and R is the correct explanation of A.(b) Both A and R are individually true but R is not the correct explanation of A(c) A is true but R is false(d) A is false but R is true Statement (I) : Specific output of a SI engine is higher than the CI engineStatement (II): Its higher engine mixture result in ability to burn richer mixture result in increasedenergy conversion rate.a)Ab)Bc)Cd)DCorrect answer is option 'B'. Can you explain this answer?

Gr Ram asked   •  1 hour ago

## Match the items in columns I and II

Amal George asked   •  1 hour ago

## For a cotter, the ratio of thickness to width isa)1 : 4b)1 : 3c)2 : 3d)1 : 2Correct answer is option 'A'. Can you explain this answer?

SUNITA MADAN asked   •  1 hour ago

## A shell may be termed as thin if the ratio of thickness of the wall to the diameter of the shell is less than one toa)5b)10c)15d)20Correct answer is option 'C'. Can you explain this answer?

Prasanna Tikar asked   •  1 hour ago

## In a quasiequilibrium process, the pressure in a systema)remains constantb)varies with temperaturec)is everywhere constant at an instantd)increase if volume increasesCorrect answer is option 'C'. Can you explain this answer?

Techtime Telugu asked   •  1 hour ago

## Consider Consider the following following advantages advantages of die casting casting over sand casting : 1. Rapidity Rapidity of the process process 2. Smooth surface 3. Strong dense metal structure structure Which of these... more

Abhishek Govil asked   •  1 hour ago

## According to Euler's column theory, the crippling load for a column of length (l) with one end fixed and the other end hinged, isa)b)c)d)Correct answer is option 'C'. Can you explain this answer?

Surjeet Singh asked   •  1 hour ago

## The time of flight of a projectle on downward inclined plane depends upona)angle of projectiob)angle of inclination of the planec)both (a) and (b)d) none of theseCorrect answer is option 'C'. Can you explain this answer?

Prasad Pasupula asked   •  2 hours ago

## The point of contra-flexure occurs only ina)cantilever beamb)overhanging beamc)continuous beamd)simply supported beamCorrect answer is option 'B'. Can you explain this answer?

Abhishek Govil asked   •  2 hours ago

## Gearing contact is which one of the following ?a)sliding contactb)Sliding contact, only rolling at pitch pointc)Rolling contactd)Rolling and sliding at each point of contactCorrect answer is option 'B'. Can you explain this answer?

Blackwood Wen asked   •  2 hours ago

## Which one of the following expresses the sensitiveness of a governor?(Where N1 = Maximum equilibrium speed, N2 = Minimum equilibrium speed)a)b)c)d)Correct answer is option 'D'. Can you explain this answer?

Deivendira Brabu asked   •  2 hours ago

## The primal of a LP problem is maximization of objective function with 6 variables and 2 constraints.Which of the following correspond to the dual of the problem stated?1. It has 2 variables and 6 constraints2. It has 6 variables and 2 constraints3. Maximization of objective function4. Minimization of objective functionSelect the correct answer using the codes given below:  a)1 and 3  b)1 and 4  c)2 and 3  d)2 and 4 Correct answer is option 'B'. Can you explain this answer?

Bhumik Chauhan asked   •  2 hours ago

## In grey cast iron, carbon is present in the form ofa)cementiteb)free carbonc)flakesd)spheroidse)nodular aggregates of graphiteCorrect answer is option 'C'. Can you explain this answer?

Abhishek Govil asked   •  2 hours ago

## Match List-I (Product) with List-II (Process of Manufacture) and select the correct answerusing the codes given below the lists :List-IA. Automobile piston in aluminium alloyB. Engine crankshaft in spheroidal graphite ironC. Carburettor housing in aluminium alloyD. Cast titanium bladesList-II1. Pressure die-casting2. Gravity die-casting3. Sand casting4. Precision investment casting5. Shell mouldinga)Ab)Bc)Cd)DCorrect answer is option 'A'. Can you explain this answer?

Kishan Pathak asked   •  2 hours ago

## According to lami's theorema)the three forces must be equalb)the three forces must be at 120º to each otherc)the three forces must be in equilibriumd)if the three forces acting at a point are in equilibrium, then each force is proportionalto the sine of the angle between the other twoCorrect answer is option 'D'. Can you explain this answer?

Hriday Pratim Sarma asked   •  2 hours ago

## A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height ofa)1mb)2mc)3md)4mCorrect answer is option 'B'. Can you explain this answer?

Vinod Verma asked   •  2 hours ago

## Flow stress corresponds toa)fluids in motionb)breaking pointc)plastic deformation of solidsd)rupture stressCorrect answer is option 'C'. Can you explain this answer?

Mihatpa Guite asked   •  2 hours ago

## German silver is an alloy ofa)silver and some impuritiesb)refined silverc)nickel, copper and zincd)nickel and coppere)silver and goldCorrect answer is option 'C'. Can you explain this answer?

Surjeet Singh asked   •  2 hours ago

## Reaction turbines are used fora)low headb)high headc)high head and low discharged)high head and high dischargeCorrect answer is option 'D'. Can you explain this answer?

Kavyashree K asked   •  2 hours ago

## For a cantilever beam dM/dx = constant for its whole length. What is the shape of SF diagram for the beam?a)A rectangleb)A trianglec)A parabolad)A hyperbolaCorrect answer is option 'B'. Can you explain this answer?

Udeshya Kumar Gupta asked   •  2 hours ago

## A steel bar of length L is fixed at both the ends and is subjected to a non- uniform increase in temperature given by expression, tx = t× x³/L³. What will be the compressive stress in the bar? Given: Thermal expansion coffee ... more

Abhishek Anand asked   •  2 hours ago

## A heat pump operating based on a reversed carnot cycle between temperature T1 and T2, where T1 is higher absolute temperature and T2 is lower absolute temperature then the COP of heat pump isa)b)c)d)Correct answer is option 'A'. Can you explain this answer?

Saurav Chaturvedi asked   •  2 hours ago

## If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is __________ the momentum of body having mass m2.a)equal tob)less thanc)greater thanCorrect answer is option 'C'. Can you explain this answer?

Yasir Nawaz asked   •  2 hours ago

## Pressure drop for laminar flow of a liquid in a smooth pipe is a) directly proportional to density b) Inversely proportional to density c) independent of density.?

Hardik Barot asked   •  3 hours ago

## The ratio of dynamic load carrying capacity and radial load of a ball bearing is 3. The life of the bearing in million revolution isa)3b)6c)9d)27Correct answer is option 'D'. Can you explain this answer?

Abhishek Govil asked   •  3 hours ago

## A cantilever beam of length L is subjected to a moment M at the free end. The moment of inertia of the beam cross section about the neutral axis is I and the Young's modulus is E. The magnitude of the maximum deflection isa)b)c)d)Correct answer is option 'A'. Can you explain this answer?

Aadarsh Vikram asked   •  3 hours ago

## Consider the following two processes:a. A heat source at 1200 K loses 2500 kJ of heat to sink at 800 Kb. A heat source at 800 K loses 2000 kJ of heat to sink at 500 KWhich of the following statements is TRUE?a)Process I is more irreversible than Process IIb)Process II is more irreversible than Process Ic)Irreversibility associated in both the processes is equald)Both the processes are reversibleCorrect answer is option 'B'. Can you explain this answer?

Sreenath Narayandas asked   •  3 hours ago

## A small maintenance project consists of the following 10 jobs, whose precedence, relationships are identified by their node numbers:Q.What is the earliest and latest start and finish times for job F?a) [7, 13] [7, 13]b) [7, 14] [7, 15]c) [7, 9] [14, 16]d) [9, 17] [12, 20]Correct answer is option 'A'. Can you explain this answer?

Vipin Kumar asked   •  3 hours ago

## The piston rod and the crosshead in a steam engine are usually connected by means ofa)Cotter jointb)Knuckle jointc)Ball jointd)Universal jointCorrect answer is option 'A'. Can you explain this answer?

Mounish Gangarapu asked   •  3 hours ago

## Which of the following is a mesomorphous material ?a)Micab)Silverc)Leadd)BrassCorrect answer is option 'A'. Can you explain this answer?

Aadarsh Vikram asked   •  3 hours ago

## In a simple single stage gas turbine plant, if T1 is the minimum temperature and T3 is the maximum temperature then what is the work ratio in terms of rp?a)b)c)d)Correct answer is option 'B'. Can you explain this answer?

Aagam Aagam asked   •  3 hours ago

## Hemispherical configuration of the crown of firebox?

Narendra Nari asked   •  3 hours ago

## Which of the following effects are possible due to residual stresses in welding?    1.  Reduce dimensional stability.  2.  Weld cracking.3.  Effect on fatigue strength   4.  Reduction in the creep strength.Select the correct answer using the code given below:  a)1 and 2 only  b)2 and 3 only  c)1 and 3 only  d)1, 2, 3 and 4 Correct answer is option 'D'. Can you explain this answer?

Shweta Gabale asked   •  3 hours ago

## Golden linkage is aa)Double crankb)Crank Rockerc)Double Rockerd)Not a MechanismCorrect answer is option 'A'. Can you explain this answer?

Vivek Kothare asked   •  3 hours ago

## When a system is in equilibrium, any conceived change in entropy would bea) maximumb) zeroc) positived) negative Correct answer is option 'B'. Can you explain this answer?

Udeshya Kumar Gupta asked   •  3 hours ago

## Consider the following statements about antifriction bearing?

Dharmendra Singh asked   •  3 hours ago

## The....... states that changes of internal energy of a perfect gas is directly proportional to the change of temperature.a)Boyle's lawb)Charle's lawc)Gay–Lussac lawd)Joule's lawCorrect answer is option 'D'. Can you explain this answer?

Jayananda Dehury asked   •  3 hours ago

## Worm working or semi-hot working process, which is the plastic deformation of metal or alloy under conditions of temperature and strain rate, is performed to eliminate drawbacks of a) cold working processb) hot working processc) both cold and hot working processesd) none of the aboveCorrect answer is option 'C'. Can you explain this answer?

Arun kumar marimuthu asked   •  3 hours ago

## In an LPP if one of the decision variable is zero then the solution isa) unique optimalb) infeasiblec) degenerate if the redundant constraint is fully consumedd) unboundedCorrect answer is option 'C'. Can you explain this answer?

Prashant Dahiya asked   •  3 hours ago

## Match List-I (Theory of Failure) with List-II (Predicted Ratio of Shear Stress to Direct Stress at Yield Condition for Steel Specimen) and select the correct answer using the code given below the Lists:[IES-2006]a)Ab)Bc)Cd)DCorrect answer is option 'D'. Can you explain this answer?

Ashish Vishwakarma asked   •  3 hours ago

## Knoop hardness test is used to measure the hardness ofa)ductile materialsb)fragile materialsc)difficult-to-machine materialsd)rubberCorrect answer is option 'B'. Can you explain this answer?

Santosh Acharya asked   •  3 hours ago

## The bolts in a rigid flanged coupling connecting two shafts transmitting power are subjected toa)shear force and bending momentb)axial forcec)torsion and bending momentd)torsionCorrect answer is option 'A'. Can you explain this answer?

Sreenath Narayandas asked   •  3 hours ago

## In the manufacturing firm the operators re-assigned with each one of the machine. The cost for assigning each machine is depicted in the following table.Q.What is the optimal schedule?a) A-II, B-IV, C-III, D-Ib) A-III, B-II, C-IV, D-Ic) A-II, B-I, C-III, D-IVd) A-IV, B-I, C-II, D-IIICorrect answer is option 'A'. Can you explain this answer?

Hemant Bhagat asked   •  3 hours ago

## Arrange the following materials in order of their increasing die life :a)brass, cast iron, zinc and aluminiumb)brass, cast iron, aluminium and zincc)cast iron, brass, aluminium and zinkd)cast iron, brass, zinc and aluminiumCorrect answer is option 'C'. Can you explain this answer?

Debasish Bisoyee asked   •  4 hours ago

## A straight bar is fixed at edges A and B. its elastic modulus is E and cross-section is A. There is a load P = 120 N acting at C. The reactions at the ends area)60 N at A, 60 N at Bb)30 N at A, 90 N at Bc)40 N at A, 80 N at Bd)80 N at A, 40 N at BCorrect answer is option 'D'. Can you explain this answer?

Shubham Sharma asked   •  4 hours ago

## Assertion (A): If the bending moment diagram is a rectangle, it indicates that the beam is loaded by a uniformly distributed moment all along the length.Reason (R): The BMD is a representation of internal forces in the beam and not the moment applied on the beam.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer?

Jeevan Kumar asked   •  4 hours ago

## A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known asa)Thermodynamic cycleb)Irreversible cyclec)Reversible cycled)None of theseCorrect answer is option 'C'. Can you explain this answer?

Tarun Kumar asked   •  4 hours ago

## Which of the following are the requirements of an ideal gating system?1. The molten metal should enter the mould cavity with as high a velocity as possible2. It should facilitate complete filling of the mould cavity.  3. It should be able to prevent the absorption of air or gases from the surroundings on the molten metal while flowing through it.Select the correct answer using the codes given below:  a)1, 2 and 3  b)1 and 2  c)2 and 3  d)1 and 3 Correct answer is option 'C'. Can you explain this answer?

Mantu Das asked   •  4 hours ago

## A 70 kg person walks on snow with a total foot implant area of 500 cm2. What pressure doeshe exert on snow ?a)0.5 kPab)12.5 kPac)13.73 kN/m2d)137.3 kN/m2Correct answer is option 'C'. Can you explain this answer?

Al Hashim Kp asked   •  4 hours ago

## Adding heat exchanger to a simple ideal gas turbine cyclea)improves work outputb)reduces work outputc)improves efficiencyd)improves both work output and efficiencyCorrect answer is option 'C'. Can you explain this answer?

Sagar Pujari asked   •  4 hours ago

## When a shaft transmits power through gears the shaft experiencea)torsional stress aloneb)bending stress alonec)constant bending and varying torsional stressd)varying bending and constant torsional stressCorrect answer is option 'C'. Can you explain this answer?

Pravin Jachak asked   •  4 hours ago

## What is the deformation or dynamic factor if sum of errors on meshing teeth of steel pinion and gear is 32 x 10-3 mm?a) 284.8 N/mmb) 300.23 N/mmc) 320.5 N/mmd) 368 N/mm Correct answer is option 'D'. Can you explain this answer?

Debasish Bisoyee asked   •  4 hours ago

## The size of Gear is specific bya)Circular pitchb)Diametral pitchc)Moduled)All of the aboveCorrect answer is option 'D'. Can you explain this answer?

Ujjwal Sonewane asked   •  4 hours ago

## If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will bea)higher than the surface of liquidb)the same as the surface of liquidc)lower than the surface of liquidd)unpredictablee)none of the aboveCorrect answer is option 'C'. Can you explain this answer?

Udeshya Kumar Gupta asked   •  4 hours ago

## The allowable tension in the belt of a band type brake shown below is 1KN and the coefficient of friction between the belt and the 500mm diameter drum is 0.1. The maximum braking torque that can be applied to the brake is?

Shubham Saurabh asked   •  4 hours ago

## For a given value of TH (Source temperature) for a reversed Carnot cycle, the variation of TL(Sink temperature) for different values of COP is represented by which one of the following graphs ?a)b)c)d)Correct answer is option 'C'. Can you explain this answer?

Ashish Goyal asked   •  4 hours ago

## Which is true for reversible polytropic processa)temperature remains constantb)entropy remains constantc)internal energy remains constantd)some heat transfer takes place.e)none of the aboveCorrect answer is option 'D'. Can you explain this answer?

Hardik Barot asked   •  5 hours ago

## Which of the following material is best cut by oxy-cutting process ?a)Brassb)Mild steelc)Bronzed)Stainless steelCorrect answer is option 'B'. Can you explain this answer?

Abhishek Govil asked   •  5 hours ago

## According to Newton's first law of motiona)every body cotinues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external forceb)the rate of change of momentum is directly proportional to the impressed force, andtakes place in the same direction, in which the force actsc)to every action, there is always an equal and opposite reactiond)none of the aboveCorrect answer is option 'A'. Can you explain this answer?

Pooja Shende asked   •  5 hours ago

## Consider casing of metal having density 8 × 10-2 N/cc with vertical core having density 2 × 10-2 N/cc and size (all dimensions are in cm) as shown below. The net upward force acting on the core is _________ N.Correct answer is '4300'. Can you explain this answer?

Budh Sen asked   •  5 hours ago

## The lead screw of a lathe with nut is a (A) rolling pair (B) screw pair (C) turning pair (D) sliding pair?

Sai Teja asked   •  5 hours ago

## A round rod of annealed bras 70-30 is being drawn from a diameter of 8 mm to a diameter of 4 mm at a speed of 0.8 m/s. (k = 895 MPa, n = 0.49)Q.The power required in this operation isa)3.497 kWb)1.47 kWc)2.88 kWd)2.32 kWCorrect answer is option 'A'. Can you explain this answer?

Abhishek Aute Aute asked   •  5 hours ago

## In an axial flow impulse turbine, energy transfer takes place due to a)Change in relative kinetic energy b)Change in absolute kinetic energyc)Change in pressure energyd)Change in energy because of centrifugal forceCorrect answer is option 'B'. Can you explain this answer?

Manyao Konyak asked   •  5 hours ago

## Basic constituents of Monel metal area)nickel, copperb)nickel, molybdenumc)zinc, tin, leadd)nickel, lead and tine)none of the aboveCorrect answer is option 'A'. Can you explain this answer?

Abhishek Kumar asked   •  5 hours ago

## In a multi-rotor system of torsional vibration maximum number of nodes that can occur isa)twob)equal to the number of rotor plus onec)equal to number of rotorsd)equal to the number of.rotor minus oneCorrect answer is option 'D'. Can you explain this answer?

Pawan Dey asked   •  5 hours ago

## A system comprising a single phase is called aa)closed systemb)open systemc)isolated systemd)homogeneous systeme)heterogeneous system.Correct answer is option 'D'. Can you explain this answer?

Ranga Nathan asked   •  5 hours ago

## The three major types of forecasts used by business organizations area)strategic, tactical and operationalb)economic, technological and demandc)exponential, smoothing, delphi and regressiond)casual, time-series and seasonaCorrect answer is option 'B'. Can you explain this answer?

Roni Modi asked   •  6 hours ago

## Once-through boilers will not havea)Drums, headers and pumpsb)Drums, steam separators and pumpsc)Drums, headers and steam separatorsd)Drums, headers, steam separators and pumpsCorrect answer is option 'C'. Can you explain this answer?

Dharmendra Singh asked   •  6 hours ago

## A hydraulic jump occurs in a channela)whenever the flow is supercriticalb)if the flow is controlled by a sluice gatec)if the bed slope changes from mild to steepd)if the bed slope changes from steep to mildCorrect answer is option 'A'. Can you explain this answer?

suvesh bajpai asked   •  6 hours ago

## In wheel and differential axle, the velocity ratio is given by :... more

Mayur Chawla asked   •  6 hours ago

## To restore stable operating condition in a hydrodynamic journal bearing, when it encounters higher magnitude loads,   a)Oil viscosity is to be decreased  b)oil viscosity is to be increasedc)Oil viscosity index is to be increased  d)oil viscosity index is to be decreased Correct answer is option 'B'. Can you explain this answer?

Sharif Shaik asked   •  6 hours ago

## A brick (k=1.2W/m K)wall 0.15m thick separates combustion gases in a furnace from the atmospheric air at 30 0 C .The outer surface temperature is 100 0C while its emissivity is 0.8 and h=20w/m2K.Determine the inner surface te... more

Abhishek Govil asked   •  6 hours ago

## Ceramic tools are fixed to tool body bya)Clampingb)Weldingc)solderingd)BrazingCorrect answer is option 'D'. Can you explain this answer?

Aadarsh Vikram asked   •  6 hours ago

## If f(t) is a finite and continuous function for t, the Laplace transformation is given by For f(t) = cos h mt, the Laplace transformation is….. a)b)c)d)Correct answer is option 'A'. Can you explain this answer?

Hardik Barot asked   •  6 hours ago

## The polytropic index (n) is given bya)b)c)d)Correct answer is option 'B'. Can you explain this answer?

Bidhan Das asked   •  6 hours ago

## For a given centrifugal pumpa)head varies inversely as square of speedb)discharge varies directly as speedc)discharge varies directly as square of speedd)Power varies directly as fifth power of speedCorrect answer is option 'B'. Can you explain this answer?

Sant Sardar asked   •  6 hours ago

## The pressure measured with the help of a pressure gauge is calleda)atmospheric pressureb)gauge pressurec)absolute pressured)mean pressureCorrect answer is option 'B'. Can you explain this answer?

Hardik Barot asked   •  6 hours ago

## The number of instantaneous centres of rotation for a 10 link kinematic chain isa)36b)90c)120d)45Correct answer is option 'D'. Can you explain this answer?

Prabhakar Kumar asked   •  6 hours ago

## Magnesium crystallizes in HCP structure. If the lattice constant is 0.32 nm, the nearest neighbour distance in magnesium isa)0.64 nmb)0.32 nmc)0.16 nmd)0.8 nmCorrect answer is option 'B'. Can you explain this answer?

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