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  • Question

  • Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is


  • Options
  • A. more
  • B. less
  • C. same
  • D. cither (a) or (b); depends upon the I.D. of the pipe

  • Correct Answer
  • less 

    • More questions

    • 1. Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional area of the conductor)

    • Options
    • A. A
    • B. l
    • C. A2
    • D. both 'a' & 'b'
      • Discuss
    • 2. Boiling point of a solution as compared to that of the corresponding solvent is

    • Options
    • A. less
    • B. more
    • C. same
    • D. either more or less; depends upon the solvent
      • Discuss
    • 3. The combustion equations of carbon and carbon monoxide are as follows:
      C + O2 = CO2, ?H = - 394 kJ/kg . mole CO + 1/2 O2 = CO2, ?H = - 284.5 kJ/kg. mole.
      The heat of formation of CO is __________ kJ/kg. mole.

    • Options
    • A. -109.5
    • B. +109.5
    • C. +180
    • D. +100
      • Discuss
    • 4. The single parameter model proposed for describing non-ideal flow is the __________ model.

    • Options
    • A. tank in series
    • B. dispersion
    • C. both (a) & (b)
    • D. neither (a) nor (b).
      • Discuss
    • 5. The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since

    • Options
    • A. the function is exponential.
    • B. the Laplace transform of integral of exp(at) has finite values only for s > a.
    • C. the Laplace transform integral of exp(at) has initial values only for s > a.
    • D. the function exp(at) is piece-wise continuous only for s > a.
      • Discuss
    • 6. At 100°C, water and methylcyclohexane both have vapour pressures of 1 atm. Also at 100°C, the latent heats of vaporisation of these compounds are 40.63 kJ/mole for water and 31.55 kJ/mole for methylcyclohexane. The vapour pressure of water at 150°C is 4.69 atm. At 150°C, the vapour pressure of methylcyclohexane would be expected to be

    • Options
    • A. significantly less than 4.69 atm.
    • B. nearly equal to 4.69 atm.
    • C. significantly more than 4.69 atm.
    • D. indeterminate due to lack of data
      • Discuss
    • 7. A boiling water reactor is the one, in which the

    • Options
    • A. coolant water is allowed to boil in the core of the reactor.
    • B. coolant water, after being heated in the reactor core, generates steam in a boiler.
    • C. pressurised water is pumped into the core.
    • D. fuel and the coolant are thoroughly mixed to form a homogeneous solution.
      • Discuss
    • 8. At standard conditions,
      N2 + 2O2 ⇌ 2NO2; ?G° = 100 kJ/mole
      NO + O2 ⇌ 2NO2; ?G° = -35 kJ/mole
      The standard free energy of formation of NO in kJ/mole is

    • Options
    • A. 15
    • B. 30
    • C. 85
    • D. 170
      • Discuss
    • 9. The symbol for "capillary line" in instrumentation diagram is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 10. Which of the following is not classified as a thermo electric pyrometer?

    • Options
    • A. Resistance thermometer.
    • B. Thermocouple.
    • C. Optical pyrometer (disappearing filament type)
    • D. Radiation pyrometer
      • Discuss

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