the higher the Q the narrower the bandpass or band-rejection.
however high Q is not always desirable. for example in receiver IF stages too high a Q will filter out some of the needed modulation bandwidth, destroying signal information.
yes
Slip rings are needed to connect a rotating armature to external fixed circuits.
Could you explain why these qualities would be needed inyour chosen job
A ground (earth) wire is needed in not just a light circuit but in all circuits that are now installed.
It shouldn't. The biggest factor affecting the texture/quality would be how much mixing you do. Stir only as much as needed to incorporate all ingredients into a smooth, lump-free batter.
It just isn't. If the tower is designed for two circuits in the future, and only one is needed now, only one circuit is installed, and there is no problem.
What about 'em? There's more circuits than I could even begin to describe from DC to RF. Depends on what you want to do as to what type to use and what design is needed.
A sigma factor (σ factor) is a protein needed only for initiation of RNA synthesis.
allmost every electronic devices uses resistors..(it is needed in all circuits)
When Formula one needed a better way for timing drivers.
Handiness
It needed a lot of money to finance its operations.