A small permanent magnet motor has a torque constant kT=0.1 Nm/A and a back e. m.f. constant ke=2.50 V/krpm. The total internal resistance is R=10 Ω. Determine the torque for maximum power and the maximum rotational speed if the applied voltage is V=5V. Sketch the characteristic curves of a generic permanent magnet motor.

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?