1In order to get enough spring tension developed to operate a spring wound timer at lower time settings, what must you do?
Turn the knob past a certain point indicated on the timer
2How accurate are spring wound timers?
Not very accurate
3Is the accuracy of a spring wound timers adequate for all the applications where they are used?
No
4How accurate are motor driven timers considered to be?
Very accurate
5What is special about the electric motor used on motor driven timers?
Synchronous motors, constant speed
6Are the camps on motor driven timers adjustable?
Usually
7What are the disadvantages of motor driven timers?
Expensive
8How does a motor driven interval timer work?
Once set for a certain time, you only have to press a button to repeat that time the next time used
9What part of the motor driven timer is most likely to fail first?
Switches
10What effect can high ambient heat have on solid state timers?
Shortened life span, inaccuracy
11What are the two basic types of solid state timers?
Digital and resistance - capacitance
12How does a RC solid state timer operate?
Works by the time it takes to share or discharge a capacitor through a resistor
13How does a digital solid state times operate?
Measures time base on electrical power frequency.
14Which solid state timer has a high accuracy rate?
Digital
15Why is it difficult to troubleshoot the cause of a timer failure in a system using a solid state timer compared to a motor driven timer circuit?
Cannot tell what portion of the timer was damaged, or by what. You cannot see it operating