PLC stands for Programmable Logic ControllerDCS for Data control SystemSCADA for Supervisory Control And Data Acquisition SCADA involves supervision by a user, in most cases the plant controller.Whereas PLC is the means by which he performs the function of SCADA.DCS on the other hand stand only to control the system and not to log any datain the process of controlling.
A 75 load uses 2 W of power. The output voltage of the power supply is approximately A. 120 V B. 1.2 V C. 12 V D. 6 V
When the current through a 12 k resistor is 8 mA, the power is A. 7.68 mW B. 768 mW C. 7.68 W D. 76.8 W
How much continuous current can be drawn from a 60 Ah battery for 14 h? A. 42.8 A B. 428 A C. 4.28 A D. 4.2 A
The power rating of a carbon-composition resistor that is to handle up to 1.2 W should be A. 2 W B. 1 W C. 5 W D. 0.5 W
A half-watt is equal to how many milliwatts? A. 5,000 mW B. 5 mW C. 500 mW D. 50 mW
Three hundred joules of energy are consumed in 15 s. The power is A. 2,000 W B. 2 W C. 20 W D. 200 W
A 3.3 k resistor dissipates 0.25 W. The current is A. 8.7 mA B. 87 mA C. 8.7 µA D. 8.7 A
A 220 resistor dissipates 3 W. The voltage is A. 73.3 V B. 2.5 V C. 25.7 V D. 257 V
For 12 V and 40 mA, the power is A. 480 mW B. 0.480 W C. 480,000 µW D. all of the above
How many watt-hours represent 65 W used for 18 h? A. 11.7 Wh B. 1,170 Wh C. 11,700 Wh D. 117,000 Wh
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