| To prevent motor overload during start-up of a hermetically sealed centrifugal refrigeration system, what is true concerning the compressor suction gas variable inlet guide vanes? |
| A) closed until the motor is connected across the line at full voltage and current drawn is below full load current |
| B) opened until the motor is connected across the line at full voltage and current drawn is up to full load current |
| C) closed until the motor is connected across the line at full voltage and current drawn is up to full load current |
| D) opened until the motor is connected across the line at full voltage and current drawn is below full load current |
