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Home Mechanical Engineering Hydraulics and Fluid Mechanics See What Others Are Saying!
  • Question
  • The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)


  • Options
  • A. Q = The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above Cd x b2g(H2 - H1)
  • B. Q = The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above Cd x b2g(H21/2 - H11/2)
  • C. Q = The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above Cd x b2g(H23/2 - H13/2)
  • D. Q = The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above Cd x b2g(H22 - H12)

  • Correct Answer
  • Q = Cd x b2g(H23/2 - H13/2


  • More questions

    • 1. The neutral axis of a beam is subjected to __________ stress.

    • Options
    • A. zero
    • B. maximum tensile
    • C. minimum tensile
    • D. maximum compressive
    • Discuss
    • 2. The law of the machine is(where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)

    • Options
    • A. P = mW - C
    • B. P = m/W + C
    • C. P = mW + C
    • D. P = C - mW
    • Discuss
    • 3. A long delay period in compression ignition engines gives a more rapid rise in pressure which causes knocking.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 4. A reinforced cement concrete beam is considered to be made of

    • Options
    • A. homogeneous material
    • B. hetrogeneous material
    • C. composite material
    • D. isotropic material
    • Discuss
    • 5. The function of a crosshead is to guide motion of the __________ and to prevent it from bending.

    • Options
    • A. piston rod
    • B. connecting rod
    • C. eccentric rod
    • D. valve rod
    • Discuss
    • 6. A diesel engine is __________ as compared to petrol engine, both running at rated load.

    • Options
    • A. equally efficient
    • B. less efficient
    • C. more efficient
    • Discuss
    • 7. The temperature rise, between the condenser outlet and expansion valve in ammonia vapour compression system, should be as low as possible.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 8. Dielectric is used in

    • Options
    • A. electro-chemical machining
    • B. ultra-sonic machining
    • C. electro-discharge machining
    • D. laser machining
    • Discuss
    • 9. Two beams, one of circular cross-section and the other of square cross-section, have equal areas of cross-sections. When these beams are subjected to bending,

    • Options
    • A. both beams are equally economical
    • B. square beam is more economical
    • C. circular beam is more economical
    • D. none of these
    • Discuss
    • 10. A fission chain reaction in uranium can be developed

    • Options
    • A. by increasing the contents of U235
    • B. by slowing down fast neutrons so that U235 fission continues by slow neutron
    • C. both (a) and (b)
    • D. none of these
    • Discuss


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