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  • Question

  • A battery can be charged by


  • Options
  • A. adding distilled water
  • B. adding sulphuric acid
  • C. applying voltage in the reverse direction to that of charging
  • D. applying a voltage in the same direction to that of charging

  • Correct Answer
  • applying voltage in the reverse direction to that of charging 

    • More questions

    • 1. Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power)

    • Options
    • A.
    • B.
    • C. I.P.
    • D. (I.P.)2
      • Discuss
    • 2. The velocity ratio in case of an inclined plane inclined at angle ? to the horizontal and weight being pulled up the inclined plane by vertical effort is

    • Options
    • A. sin ?
    • B. cos ?
    • C. tan ?
    • D. cosec ?
      • Discuss
    • 3. Which of the following does not relate to a compression ignition engine?

    • Options
    • A. Fuel pump
    • B. Fuel injector
    • C. Governor
    • D. Carburettor
      • Discuss
    • 4. Which of the following pump is successfully used for lifting water to the turbines?

    • Options
    • A. Centrifugal pump
    • B. Reciprocating pump
    • C. Jet pump
    • D. Air lift pump
      • Discuss
    • 5. The by-pass factor (B. P. F.) in case of sensible heating of air is (Where td1 = Dry bulb temperature of air entering the heating coil, td2 = Dry bulb temperature of air leaving the heating coil, and td3 = Dry bulb temperature of heating coil)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. The force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with a velocity v is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 7. The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is

    • Options
    • A. slow speed with radial flow at outlet
    • B. medium speed with radial flow at outlet
    • C. high speed with radial flow at outlet
    • D. high speed with mixed flow at outlet
      • Discuss
    • 8. The brake power (B.P.) of the engine is given by (where W = Brake load or dead load in newtons, l = Length of arm in metres, N = Speed of engine in r.p.m., S - Spring balance reading in newtons, D = Dia. of brake drum in metres, and d = Dia. of rope in metres)

    • Options
    • A.
    • B.
    • C.
    • D. all of these
      • Discuss
    • 9. Moment of inertia of a circular section about an axis perpendicular to the section is

    • Options
    • A. ?d3/16
    • B. ?d3/32
    • C. ?d4/32
    • D. ?d4/64
      • Discuss
    • 10. When a gas is heated at constant pressure

    • Options
    • A. its temperature will increase
    • B. its volume will increase
    • C. both temperature and volume will increase
    • D. neither temperature not volume will increase
      • Discuss

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