【Daily Topic】【Electrical Edition 20170308】
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Participation reward: 2 Wealth. Correct reward: 8 Wealth. Multiple-choice question: To change an air-damped time relay from a type with delay upon power-on to a type with delay upon power-off, it is necessary to ( ). A. The delay contact is reversed by 180° B. The electromagnetic system is reversed by 180° C. The ends of the electromagnetic coil are connected in reverse D. The piston is reversed by 180° B
B. Reverse the electromagnetic system by 180°
To change an air-damping time relay from a power-on delay type to a power-off delay type, it is necessary to modify (A). A. The delay contact is reversed by 180° B. The electromagnetic system is reversed by 180° C. The ends of the electromagnetic coil are connected in reverse D. The piston is reversed by 180°
To change an air-damping time relay from a power-on delay type to a power-off delay type, it is necessary to modify (A). A. The delay contact is reversed by 180° B. The electromagnetic system is reversed by 180° C. The ends of the electromagnetic coil are connected in reverse D. The piston is reversed by 180°