In secondary hypogonadism, testosterone levels are low and levels of FSH and LH are low or inappropriately normal. Any acute systemic illness can cause temporary secondary hypogonadism. Some syndromes of hypogonadism have both primary and secondary causes (mixed hypogonadism).
Function of damper winding in synchronous machine: 1.Self starting of synchronous machine: The core concept is that damper winding being short circuited carry high current, creates magnetic flux like as induction machine.Thus there is pulling in or better torque in starting.he rotor of induction machine is mostly of squirrel cage type which is short circuited thus provides high current in start up. Damper winding in synchronous machine is placed in the coil slots and short circuited.
But wait that's not all. If you look closely at the below picture you'll find a black part too that runs inside the spring. This is a shock absorber/damper which is also a part of vehicle suspension setup. In short : The coil springs help in energy absorption whilst the dampers help in energy dissipation. Had there been no dampers and only springs the vehicle would have continued to oscillate back and forth until the vibrations died out of natural damping.