Q&A Forum
1131 questions found
What is the reflected impedance in the primary of the transformer circuit shown?

- 20 ohms
- 500 ohms
- 50 ohms
? should be 50 ohms !
Armature reaction in a DC generator causes
- MNA to move in the opposite direction of rotation.
- MNA to move in the direction of rotation.
- GNA to move in the direction of rotation.
Another question says MNA rotates opposite armature rotation, which is true then? thx for your help.
Operating thrust reversers at low ground speeds can sometimes cause
- sand or other foreign object ingestion, hot gas re-ingestion.
- hot gas re-ingestion, compressor stalls.
- sand or other foreign object ingestion, hot gas re-ingestion, compressor stalls.
Hi to everybody. Could u tell me why the compressor stalls in this case? thank
For the CGS system, the force is
- the 'Newton' which produces an acceleration of 1cm/s2 for a mass of gram.
- the 'dyne' which produces an acceleration of 1cm/s2 for a mass of gram.
- the 'pd1' which produces an acceleration of 1 cm/s2 for a mass of gram.
I havent seen anything like this in any of the notes I have anyone understand it.?
In the anodic film inspection and sealing test, if a good seal has been accomplished
- the dye mark has no importance.
- the dye mark will not rub off.
- the dye mark will rub off.
help please. i'm confused.