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AC Control Equipment TPC 209 Exam Q’s and A’s
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- AC Control Equipment TPC 209 Exam Q’s And A’s
AC Control Equipment TPC 209 Exam Q’s and A’s
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AC Control Equipment TPC 209 ExamQ’s and A’s
NEMA ______ is related to an enclosure for use where flammable gases or
vapors may be present - -7
- What kind of armature is a clapper? - -A hinged armature that pivots to
the sealed-in position
- The shading coil reduces which of the following in the armature? - -
vibration
- The ______ voltage is the minimum potential difference that will cause the
armature to seat against the pole faces of a relay coil. - -seal-in
- What is not the result of the potential difference across the coil being too
great? - -reduced magnetic force
- The terms standard duty and heavy duty describe only the ... - -amount of
current the push button contacts can carry
- NEMA type 1B flush-mounted stations require... - -4 11/16 inch single-
outlet box
- NEMA type 7 and 9 push button stations for hazardous locations are
suitable for all of the following except...
-Class I Groups C and D hazardous gas
-Class II Groups E,F, and G hazardous dust
-Corrosive fumes or liquids - -Corrosive fumes or liquids
- When only one START-STOP station is used with several emergency STOP
buttons at different locations, the STOP stations are wired... - -in series
- Which of the following are designed for only ac use?
-encapsulated pilot light
-full voltage pilot light
-indicating lights
-joy stick operator - -Joy stick operator
- The purpose of the actuator in a precision snapswitch is to... - -transmit
force from the outside
- The temperature that develops inside a switch under operating conditions
depends on all the following except...
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