Answer the following statement(s) true (T) or false (F)
1. The windings in a delta connection are spaced 130 electrical degrees apart.
2. If the voltmeter reads zero across C2–A1, the circuit may be closed.
3. In a balanced circuit, the phase currents are equal.
4. In a four-wire delta connection, the neutral currents are calculated the same way as in a wye system.
5. The three-wire delta system is used when three-phase power on three conductors is required.
1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. TRUE
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Zero and span adjustments may affect each other.
Answer the following statement true (T) or false (F)
The only tool needed to join the industrial-type trolley duct is a ____.
A. hammer B. welder C. screwdriver D. rivet gun
Boolean, integer, and floating point constants for FBD instructions ________
A) Can be entered in the FBD instruction dialog box B) Can only be entered using the FBD input reference box C) Can be entered as either an input using the input symbol or inside the instruction box D) Can be entered as an input in an input symbol
The order of the four main components of the refrigeration cycle is:
A) Compressor - evaporator - condenser - metering device. B) Compressor - condenser - metering device - evaporator. C) Evaporator -condenser - metering device - compressor. D) Condenser - compressor - metering device - evaporator.