For the programmed timer circuit shown,when the switch is initially closed motor(s)_____ start(s)immediately.
A)M1
B)M2
C)M3
D)all of these

Question

For the programmed timer circuit shown,when the switch is initially closed motor(s)_____ start(s)immediately. 
A)M1 
B)M2 
C)M3 
D)all of these

Quizplus · Accepted Answer

When the switch is initially closed, power is immediately applied to the 555 timer IC, which triggers the output to go high. This high signal is then applied to all three relays, which activate their respective motor(s). Therefore, all of the motors (M1, M2, and M3) start immediately.

For the Programmed Timer Circuit Shown,when the Switch Is Initially