Hydraulics & Pneumatics Test Questions

Q.  Which of the following statements is true?

a. electromagnetic relays have high reliability at more cost
b. electromagnetic relays use low current and voltage, to have open or close contact in high voltage and current circuit
c. air pressure passed to pressure electric converter opens a contact which energizes a circuit for the flow of electric contact
d. all of the above


ANSWER: See Answer
 
No explanation is available for this question!
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