NTPC PAPER 2008 : * An ice block submerged in the water, if the ice melts level of water (increase, decrease, remains same, none) * Simply supported beam with w point load at the middle, max. bending moment? (wl/4) * Simply supported beam with UDL ,max.deflection (wl4/384EI) * Cantilevel beam point load at tip,max.bending momemt comes at (end) * When bearing life L10 represents (bearings 10%survive,bearings 10% fails, none ) * For welding high carbon steels which type of flame is used (oxidizing, carburizing, neutral, none) * Arrange the following cutting tools in decreasing order of machining hardness…Ceramics * When P1 and P2 are the loads acting on bearings with life L1 and L2 then L1/L2=? L1/L2= {P2/P1}10/3 * Product simplification does not mean? (Product characterization) * Which of the following process has the most scope in manufacturing? CAD/CAM, CAM, CIM, All the above. * Concurrent engineering means? (Manufacturing, designing, both, none) * Which manufacturing process yields higher output and increases worker productivity- (process layout, line+process, functional layout) * 18-4-1 represents-, Tungsten-Cr-Vn * For which material is negative allowance rovided-(Graphite,steel,bronze,cast iron) * What is the recrystallisation temperature of tin- (60,300,1000,none) * What is the purpose of borax in soldering- * Top gates are provided in which type of casting-(Shallow casting,simple,complex,none) * Which statement is true regarding simple gear trains-(i/p and o/p shafts r fixed, each shaft has 2 gears, i/p & o/p shafts r moving) * What is the purpose of normalizing- (Refining of grain structure) * As the grain size is decreased-(Hardness increases,corrosion resistance decreases,both) * Isothermal gas is filled in a vessel at a pressure P and temperature T then considering the compressible forces as the height increases pressure ??(linearly increases linearly decreases exponentially increase ) * A bottle is filled with water and air and is tied to a string and is rotated in horizontal direction. Then in which direction will air bubble travel? (bottom,neck,uniformly spread) * A empty bottle(in vaccum) filled with a gas at temp T and press P when the pressure of bottle reaches P temperature of the gas is _? (T,T/K,TK) * Bearing somerfield number _ with load on bearing? (increases,decreases,no change) * Critical radius for a sphere is-(2k/h) * Critical radius exist for_ (spherical,cylindrical,both,slab) * Convectional resistance/internal resistance is called (biot number) * Nusselt no. is? (hl/k) * EOQ=? * Which statement is true regarding critical path method? (i only one critical path exists for a network, more than one with same duration,) * Shipment cost,inspection cost,storage cost comes under_ (carrying cost ,holding cost,) * Ischronous governers sensitivity is- (zero,infinite) * Self energized brakes are-(friction moment acts in the direction of application of force,opposite to the direction of force, does not need a force to act ,) * The ratio of heat capacities for evaporator and condenser is_ (Zero,infinity) * When steam and air mixture with partial pressure 0.06 and 0.07 enters a condenser what is the condenser pressure? (0.06,0.07,0.53,0.03) * In pulverized burning of coal heat transfer from boiler to water occurs through_( predominant radiation, convection, conduction, conduction +convection) * Rankine cycle efficiency for same parameters increases mostly with_(reheat, regeneration, super heating ) * Ericson cycle with all reversible processes assume_(carnot cycle,stirling,brayton * Air delivery tank at outlet of reciprocating compressor is provided for_ (provide constant pressure, avoid cavitation, ) * High speed centrifugal pump has _? (vanes faces in forward direction side,backward,radial vanes) * Thermal efficiency in decreasing order_? (Otto cycle>dual cycle>diesel cycle) * When a 1000 K body comes in contact with atmosphere at 300K a loss of 9000 KJ heat is transferred. The net available energy transferred is_ * When entropy of a system increases_? (unavailable energy increases ) * Rolling is a process widely used for_? * Tool nomenclature_? * In francis turbine movement of steam? * For low power consumption _? (rake angle should be increased / decreased, nose angle increased/ decreased) * Continuous chips occur in_? (High speeds,low speeds,both,none) * Primary forces in a reciprocating engine_? (fully balanced, partially balanced, completely unbalanced, none) * In proximate analysis pyrogallol is used for analysis of which element_? (nitrogen,oxygen) * Sulphur content in fuel greatly affects_? (corrosion) * Heat transfer through radiation can be increased by_? (decreasing emissivity and increases temperature of hot body) * Which theory of failure clearly explains the failure in case of ductile material? (Maximun shear stress theory or Guests or trescas theory) When a material is subjected to continuous cycles which limit is being verified? (Endurance limit) Where is stress concentration maximum? (notches, stress reducing through cuts) * Power transmitted through a belt drive_? P(T2- T1) * According to Eulers theory crippling or buckling load is ____ (Wcr = Cπ2EI/l2) * During sensible heating, specific humidity_? (remains constant) * COP of a refrigerator is _? (greater than 1 ) * The maximum temperature in a refrigeration cycle is_? (less than/greater than/equal to critical temperature) * The pressure at the throat of the nozzle_? (maximum,min) * For a statically determinate set of forces for equilibrium_? (∑ f(X), f(Y), f(Z)=0,∑M=0) * For a statically determinate set of forces- (there r as many equations as the no. of unknowns) * 1-2-3 analysis is used for_? (1.break even analysis, ??) * A problem on mean time of service something like a salesman has a rating of 120. considering 10% allowance time calculate the time required to serve 120? * A problem n determining time in a queue? * Energy equation for a laminar flow is _? (Uniform and steady ,non uniform and unsteady) * Undercuts in welding occurs due to_? (low welding current, high welding current) * Work holding equipment in shearing? * At the centre of a nozzle _? (Mach no=1;=1)
Posted on: Mon, 30 Sep 2013 09:09:48 +0000
Trending Topics
Recently Viewed Topics
© 2015