The purpose of contactor 2M shown in the figure above is to _____.
a. short motor leads T4, T5, and T6 during starting to connect motor windings in a wye configuration
b. energize motor leads T1, T2, and T3 for both wye and delta connections
c. energize motor leads T4, T5, and T6 during running to connect the motor windings in a delta configuration
d. connect resistors in series with the motor windings during the transition from start to run
c. energize motor leads T4, T5, and T6 during running to connect the motor windings in a delta configuration
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A) Use tall safety stands B) Position hoist arms as close to vehicle corners as possible C) Both A and B D) Neither A nor B
In maximum power transfer, the efficiency of the system is __________
A. 100% B. 99% C. 75% D. 50%
What is the resistance of a light bulb that uses 15 watts of power when placed across a 15-volt battery?