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.
Application of Tuned Mass Dampers To Control. Vibrations of Composite Floor Systems. ANTHONY C. WEBSTER and RIMAS VAICAITIS. INTRODUCTION. Although the incidence of floor vibration problems appears. to be on the rise,1.2 the use of mechanical damping devices to. control vibrations is limited. In a recent survey of vibration. control methods, Murray3 reports that passive-mechanical. damping methods, including viscous damping, visco-elastic. damping, and tuned-mass dampers, have often gone untried. outside the laboratory or have had marginal impact in actual. buildings.