Hello every body
can you answe these qustion plz
The alternators, when connected, are usually connected:
A
Dependant on the type of generator.
B
Dependant on the type of engine.
C
In parallel mode.
D In series mode.
The services connected to a supply bus-bar are normally in:
A
parallel, so that isolation of loads decreases the bus-bar voltage.
B
series, so that isolation of loads increases the bus-bar voltage.
C
parallel, so that isolating individual loads decreases the bus-bar current consumption.
D series, so that isolating one load increases the bus-bar current consumption.
The pitch angle of a constant-speed propeller
A
increases with increasing true air speed.
B
only varies with engine RPM.
C
decreases with increasing true air speed.
D is independent of the true air speed.
The diffuser in a centrifugal compressor is a device in which the:
A
pressure rises and velocity falls.
B
pressure rises at a constant velocity.
C
velocity, pressure and temperature rise.
D velocity rises and pressure falls.
i need the answer plz it is very importent
Best Regards