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Q&A Forum

1106 questions found

Module 9. Human factors

The maximum allowable noise dose is

  • a sustained noise level of exactly 85 dB for eight hours.
  • any combination of noise and time which exceeds 90 dB TWA.
  • a continuous noise exposure level of 70 dB for eight hours.
sparkymarky asking:

Maximum allowable cannot be OVER 90db twa? Surely 90db twa IS the max, not something OVER this level?

Module 8. Basic aerodynamics

Under what conditions will an aircraft create best lift?

  • Hot damp day at 1200 ft.
  • Cold dry day at 200 ft.
  • Cold wet day at 1200 ft.
Aeromechanic asking:

Cold dry is completely opposite in meaning. What is a cold dry day ? Can someone explain .

Module 6. Materials & hardware

In corrosion, the electrode that loses electrons is

  • the cathode.
  • either the cathode or the anode depending upon the electrolyte.
  • the anode.
android811 asking:

I don't understand.
Cathode is positive and electrons are negative. How can electrons ever be attracted to anode?

Module 6. Materials & hardware

A journal load is

  • compression.
  • radial.
  • axial.
android811 asking:

Question is a bit ambiguous! Wouldn't the direction of load be radial and the type of load be compression?

Module 3. Electrical fundamentals

In a resonant parallel circuit, current is

  • zero.
  • minimum.
  • maximum.
funcaul asking:

Please can anyone explain

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