Q&A Forum
1124 questions found
What produces the most lift at low speeds?
- High camber ratio.
- Low aspect ratio.
- High aspect ratio.
High Camber Ratio: (Produces the most lift) The increased curvature accelerates air over the top of the wing more effectively, creating a massive pressure difference to generate lift even during slow flights or take offs .High Aspect Ratio: While highly efficient at cruise and reducing drag, they do not inherently boost maximum lift at low speeds compared to a cambered wing.
Resistance is measured using what unit of temperature?
- Absolute.
- Centigrade.
- Fahrenheit.
* Absolute (Kelvin) is used in thermodynamics
* Fahrenheit is not used in electrical resistance standards
* Centigrade is the practical engineering reference point for resistance temperature coefficients
What would you use for the core in a generator current transformer?
- Air core.
- Laminated core.
- Steel Core.
A laminated core (typically made of thin, stacked sheets of grain-oriented silicon steel) is the standard and most efficient choice
The Stability windings in a 3 phase AC generator are to sense
- field oscillations.
- overvolt.
- phase shift.
he stability windings (often called damping or amortisseur windings) in a 3-phase AC generator are primarily designed to dampen mechanical rotor oscillations and stabilize the machine. They do not actively "sense" overvoltages or phase shifts; those conditions are monitored by external protection relays.
In a voltaic cell, what is the build-up on the cathode called?
- Hydration.
- Polarization.
- Sulphation.
polarization is corect