IEC FINAL REVIEW YEAR 3 QUESTIONS AND ANSWERS RATED A+.

IEC FINAL REVIEW YEAR 3 QUESTIONS AND ANSWERS RATED A+. ___ is a type of overload relay used in a motor start. a. Melting allow b. Bimetallic c. Magnetic d. All of these - correct answer. All of these A melting allow overload in a magnetic motor starter ____. Select one: a. actuates when excessive motor circuit current is present and opens only the affected motor circuit power contacts on the starter b. must be replaced after it operates c. can be reset immediately after it operates d. actuates when excessive motor circuit current is present and opens the control circuit to de-energize the coil e. actuates when excessive control circuit current is present and opens the control circuit to de-energize the coil - correct answer. actuates when excessive motor circuit current is present and opens the control circuit to de-energize the coil A 240-volt, 3Φ motor would require a starter with a minimum of ___ power pole(s) to open the circuit. Select one: a. 3 b. 1 c. 2 - correct answer. 3 Refer to Figure 321.13 Symbol S is a ___. Select one: a. circuit interrupter (or breaker) b. disconnect (or safety switch) c. circuit breaker with thermal OLs d. circuit breaker with magnetic OLs e. circuit breaker with thermal and magnetic OLs - correct answer. disconnect (or safety switch) Inherent motor protection devices are built into the motor and are reset ___. Select one: a. manually b. automatically - correct answer. automatically Inherent motor protection devices are bui