CER ELECTRICAL LEVEL 2 MODULE 11 'CONTROL SYSTEMS AND FUNDAMENTAL CONCEPTS' COMPLETE QUESTIONS AND CORRECT ANSWERS | GRADED AND THE LATEST SERIES

NCCER ELECTRICAL LEVEL 2 MODULE 11
'CONTROL SYSTEMS AND FUNDAMENTAL
CONCEPTS' COMPLETE QUESTIONS AND
CORRECT ANSWERS | GRADED AND THE
LATEST SERIES
The maximum tungsten/infrared load amperage for a NEMA Size 0 magnetic

contactor is ___.


Ans: 10A


Question: A manual reversing starter uses ___.


Ans: a mechanical interlock


Question: Mechanically held relays would most likely be used in a ___.


Ans: hospital, auditoriums, churches


Question: A single-contact device can be used to control multiple loads using a

___.


Ans: multiple-pole relay


Question: A furnace might use an on delay to ___.


Ans: avoid blowing cold air into the space when the system starts up


Question: A type of relay controlled by a magnetic field is a(n) ___.

, Ans: reed relay


Question: A type of renewable overload device is a ___.


Ans: melting alloy relay


Question: The operating coil of a relay is designed to work properly at ___.


Ans: 80% to 110% of the rated voltage


Question: A device that allows relays to be controlled as a group while still

allowing individual switch control is a ___.


Ans: master sequencer


Question: Where low-voltage cable must be run parallel with high-voltage

cable, it should be separated by minimum of ___.


Ans: 6" (150mm)


Question: The function of a shading coil in a contactor is to ___.


Ans: prevent contact chatter and hum


Question: What is the major difference between a contactor and a motor

starter?


Ans: The starter provides overload protection while a contactor does not.