Question 319Electricity/Electronics - QMED70% to pass
Referring to figure "B" of the illustrated control circuit schematic diagram, which of the following statements is true when the motor is running in the forward direction? Illustration EL-0011
AI Explanation
The correct answer is A) The normally open (NO) "F" contacts are closed.
When the motor is running in the forward direction, the normally open "F" contacts will be closed, allowing current to flow through the forward circuit. This is the expected behavior for a motor control circuit, where the "F" (forward) contacts are energized to run the motor in the forward direction.
The other answer choices are incorrect because: B) The normally closed (NC) "F" contacts would be open, not closed, when running in the forward direction. C) The normally closed (NC) "R" contacts would be closed, not open, when running in the forward direction. D) The normally open (NO) "R" contacts would be open, not closed, when running in the forward direction.
Related Questions
#317 As shown in figure "B" of the illustration, which of the operations listed will happen when the 'jog button' is pushed? Illustration EL-0010 #318 In the illustrated motor controller, what do the contacts across terminals "3" and "4" of the control circuit represent? Illustration EL-0017 #320 As shown in the illustration, assuming power is available at the control circuit, which listed action will occur FIRST when the "off-run" switch is placed in the "run" position? Illustration EL-0017 #321 What type of control circuit logic is featured in the electrical schematic diagram for the motor starting circuit shown in figure "B" of the illustration? Illustration EL-0007 #322 In the system shown in the illustration, the engine room station is unable to signal any other station, nor is any other station able to signal the engine room station. The engine room station can, however, ring itself by proper positioning of its selector switch. What is the most probable cause of this problem? Illustration EL-0093