41. L increases with the duty cycle . 42. The duration of time ( dT ) is defined by the duty cycle and by the switching frequency. 43. There are many application, environmental, efficiency and duty cycle aspects to consider when choosing between compressors and blowers. 44. SRM is most often used with scanning instruments where the second mass analysis event is duty cycle limited. 45. Other methods to implementing demand response approach the issue of subtly reducing duty cycles rather than implementing thermostat setbacks. 46. Average duty cycle ( ratio of sound on time to total time ) is less than 20 percent. 47. The control signal is a square wave operating at 25 kHz, with the duty cycle determining the fan speed. 48. The ratio of the high period to the total period of any rectangular wave is called the duty cycle . 49. AC losses depend on the design of the conductor, the duty cycle of the device and the power rating. 50. If the unit runs beyond the duty cycle required for those particular operating conditions without achieving the proper indoor temperature,
