Q&A Forum
1106 questions found
A 4:1 step-up transformer receives 120VAC in its primary and has 1600 Ohms resistance in its secondary. What is the current drawn from the source?
- 3 A.
- 1.2 A.
- 0.3 A.
Why 1.2? I think it's 0.3(480/1600)
What is the area of the trapezium shown?

- 24 cm^2
- 27 cm^2
- Area cannot be calculated from information given.
Please write your question here.
The call system for the captain will have the audio signal of a
- horn.
- two tone chrime.
- hi tone chime.
Is this aircraft system dependent/specific or it is standard across all aircraft
Which of the following are acceptable to use in cleaning anodized surfaces?
- Steel wool, aluminium wool, fibre bristle brush.
- Aluminium wool, fibre bristle brush.
- Brass wire brush, stainless steel wire brush.
Please write your question here.
Copper is an inferior conductor to aluminium when comparing
- weight for weight.
- CSA with CSA.
- load for load.
Please write your question here.