ISRO Previous Year Question Paper 2015

   

1.    Unit of energy is

   (a)-Watt       (b)- Newton     (c)-Newton per meter    (d)-Joule

 2.   Unit of current is

   (a)-Volt        (b)-Ohm       (c)-Ampere      (d)-joule

 3.   Convert 60 degree Celsius to fahrenheit

   (a)100 F      (b)140 F       (c)160 F           (d)172 F

 4.   Kelvin is the unit of

     (a)-Power     (b)-Energy    (c)-Temperature    (d)-None of these

 5.  The least count of vernier caliper is

       (a)0.1mm      (b)0.02mm        (c) 0.01mm    (d)0.2mm

 6.   Divide 0.03 by 0.8

        (a)0.266         (b)3.75       (c)0.0375       (d)0.38

 7.    The minimum distance from the rivet hole centre to the plate edge is

         (a)1.5d          (b)3d           (c)2d        (d)2.5d

 8.    A screw is specified by

          (a)-Pitch diameter     (b)-Minor diameter     (c)- Major diameter   (d)-None of these

  9.    The cutting teeth of a hacksaw blade should be

           (a)-Hardened           (b)-Tempered      (c)-Annealed      (d)-Hardened and  Tempered

 10.    The angle of BSW thread is

 

            (a)60          (b)37        (c)55        (d)120 

   11.    In ISI  system of fits , capital letters indicates

 

             (a)-Hole       (b)-Shaft     (c)-Hole or Shaft       (d)-None of these

   12.     Compared to 16 gauge sheet , 20 gauge sheet is

              (a)-Thinner    (b)-Thicker     (c)-Equal in thickness     (d)-None of these

 

   13.     In gas welding , the gas mixture used is

              (a)-Oxygen-Hydogen     (b)-Oxygen-Propane   (c)-Oxygen-Acetylene   (d)-Oxygen-CoalGas

    14.     Which one of the following process does not required filler metal

              (a)-Arc welding        (b)-Resistance welding     (c)-Gas welding     (d)-None of these

    15.    Which of the following material has maximum brittleness

               (a)-Stainless steel     (b)-Cast iron    (c)-Mild steel   (d)-Copper

            

    16.    A jig is used for

                (a)-holding and guiding the tool

                (b)- holding the job

    

                (c)-setting the work piece on the machine

                (d)-Easy movement of the job

     17.   For TIG welding , commonly used gas is

                 (a)-acetylene       (b)-hydrogen      (c)-argon      (d)-all of these 

    18.   File  is  generally made of

                   (a)-MS                  (b)-HCS                 (c)-HSS         (d)-CI

     19.   Tempering is done for

                    (a)-Increasing the hardness

                    (b)-Improving the strength

    

                    (c)-Relieving  the stress

  

                    (d)-To iecrease  the machinability

      20.   16% of 550 is

                   (a)-98                    (b)-68                    (c)88               (d)-48

       21.  The coolant for machining  cast iron  is

                  (a)-Soluble oil        (b)-kerosene       (c)-Soap water    (d)-none of these

      22.   If 1/2b =1/3 . what is the value of b  ?

                  (a)2.5                      (b)2                     (c)1.7          (d)1.5

       23.  The hole opening which is required for screwing  conical or tapered necked screws is

                   (a)-Counter boring (b)Counter sinking      (c)-Jig boring         (d)-Jig drilling

       24.    In liquids the heat transfer  takes place by means of

                   (a)-Conduction         (b)-Convection          (c)- Radiation           (d)-Passivation

          25.     Is the unit of relative density.

                   (a)-gm/cc                    (b)-m/s                  (c)-Kg/cm2          (d)-it has no unit

           26.     As  per IS 962-1967 , the designation of drawing sheet size 841x1149mm

                  (a) A0               (b)-A1            (b)-A2          (d)-A3

            27.     One gallon is

                   (a)-  4.564 L         (b)- 4.724  L     (c) 4.546 L     (d)- 4.646 L

             28.    30 degree is equal to  …………. Radians

                   (a)-   π/3        (b)-  π/6        (c)-     π/2    (d)-      π/4

             29.    For a given RPM , if the diameter of the drill increases cutting speed will

                     (a)-Increases      (b)- Decreases   (c)- Remain same   (d)- None of these

             30.    In a drill Jig which part is hardened

                     (a)-Jig body   (b)- Body and Bush   (c)- Bush    (d)-None of these

             31.  Which among the following is the purest form of iron ?

                     (a)-Pig iron        (b)-Cast iron    (c)-Wrought iron    (d)-Steel

              32.    Poise is the unit of

                     (a)-Energy     (b)- Viscosity     (c)-Presssure    (d)-None of these

              33.     Tolerence is

                     (a)-The difference between the maximum hole and minimum shaft 

                     (b)-The difference between the maximum and minimum limits of size

                     (c)-The difference between the minimum hole and maximum shaft

                      (d)- None of the above

                34.  The least count of steel rule  is

                      (a)- 0.1mm       (b) 0.5mm      (c)-  1mm     (d)-None

                35.    Point angle of a twist drill is

                       (a)- 120         (b)- 55     (c)   118      (d)-   157

                36.     Which drill is used for tapping 10mm tap

                         (a)- 9.5mm      (b)- 9mm       (c) 8.5mm     (d)-  8mm

                 37.    Main constituents of HSS are

                         (a)- Tungesten ,Nickel,Chromium,Stellite

                         (b)- Tungesten ,Nickel,Stellite,Cobalt

                         (c)- Tungesten,Chromium,Silicon,Vanadium

                          (d)- None

                38.    Ductility of metal enables it

                         (a)- To be drawn into thin wire                     (b)- To be shaped into fine sheets

                          (c)- To break into pieces with small force      (d)- To cut another metal

              39.   In engeenering drawing practice ……….. are drawn inclined at 45 degree

                      (a)-Section lines     (b)- Cutting plane lines   (c)- Dimensions lines   (d)- None

               40.    When a right circular cone is cut by a section plane inclined to the base, the true                                 shape of the the section is

                       (a)- Circular       (b)-Elliptical        (c)-Rectangular          (d)-Parabola

               41.   LPG   means

                      (a)-Low pressure gas       (b)-Low power gas         (c)-Low petroleum gas                                              (d)- Liquified petroleum gas

                42.   Type of thread in a pipe is called

                       (a)-BSP thread                 (b)- BSW thread          (c)- Metric thread      (d)- Acme thread

                43.     Lathe bed is made up of   

                      (a)-Mild steel          (b)-Cast iron        (c)-Alloy steel          (d)-Carbon steel

                 44.     The process of making cup shaped components from sheet metal blank is called

                       (a)-Drawing        (b)-Spinning       (c)- Extrusion     (d)- Piercing

                 45.    Which gauge is used to measure the thickness of sheets

                       (a)-Feelar Gauge    (b)-Ring Gauge   (c)-Plug Gauge   (d)- Wire Gauge

                  46.      Which is used for making very large radius

                        (a)-Divider    (b)-Caliper     (c)- Trammel    (d)-Vernier

                  47.     Dowel pins are used for

                          (a)-Measurement of diameter of hole        (b)-Measurement of depth of hole

                         (c)- Hidden fastning                        (d)-NONE

           48.   The property of a metal by virtue of which the metal can be bent or stretched without                           failure is

                          (a)-Hardness          (b)-Brittleness          (c)-Ductility        (d)-Toughness 

           49.     Rubber is ……….. more elastic than mild steel

                          (a)-More        (b)-Less     (c)-Equal       (d)- NONE

            50.      Cast iron is used to manufacture machine beds because
                      (a-It is heavy    (b)-It is cheap   (c)-It is brittle    (d)-It resist more compressive load