CONTROL PANEL WIRING - Practice Mode

1) Why sequential control of motors is required in an industrial application?

To share more loads To reduce power consumption To minimise the operating cost To increase the accuracy of operation

Correct Answer: To increase the accuracy of operation

2) Which material is used to make open frame bimetallic adjustable thermostat contacts?

Silver Brass Copper Bronze

Correct Answer: Silver

3) What is the purpose of DIN-rail used in control panel wiring?

It provides a path way for electrical wiring Install the high powered circuit accessories Mounting the double deck terminal connectors Mounting the control accessories without screws

Correct Answer: Mounting the control accessories without screws

4) Which device controls the operations in sequential control systems?

Timer Relays Contactor Control transformer

Correct Answer: Timer

5) Which DC load is represented by the DC4 standard duty cycle of contactors?

Resistive loads except motor loa Starting and stopping of shunt motor Starting and stopping of series motor Starting and stopping with inching and braking

Correct Answer: Starting and stopping of series motor

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