Explain the term duty cycle.?
What will be an ideal response?
?Duty cycle is the percentage of on time the circuit component is turned on as compared to the total time of the cycle.
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PROBLEM 2.35 The 5-ft concrete post is reinforced with six steel bars, each with a -in. diameter. Knowing that Es = 29 ? 106 psi and Ec = 3.6 ? 106 psi, determine the normal stresses in the steel and in the concrete when a 200-kip axial centric force is applied to the post.
Answer the following statement(s) true (T) or false (F)
1. The bimetal type of overload unit is used to a large extent on commercial and industrial air conditioning units. 2. The solder-melting type overload relay has two separate sections: the heater section and the contact section. 3. The bimetal type of overload operates very differently from the solder-melting type. 4. Each phase of a three-phase motor should be protected by an overload relay. 5. Overload relays will trip faster in hot weather than they will in cool weather.
Which of these is an example of a three -position actuator?
A) Recirculation door B) Bi-level air door C) Blend door D) None of these is correct
What animals are used for their milk?
What will be an ideal response?