搜题

【单选题】

To increase the frequency of an operating AC generator, you should （）

A、increase the field excitation

B、decrease the field excitation

C、increase the number of magnetic poles

D、increase the speed of the prime mover

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更多“To increase the frequency of an operating AC generator, you should （）”相关的问题

第1题

[单选题] Which of the following calendaring syntax expressions would evaluate to the last day of every month?（）

A、FREQ = MONTHLY; BYMONTHDAY = 31 B、FREQ = MONTHLY; BYMONTHDAY = -1 C、FREQ = DAILY; BYDAY = -1 D、FREQ = MONTHLY; BYDAY = 31 E、FREQ = DAILY; BYMONTHDAY = LAST_DAY

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第2题

[单选题] Which of the following calendaring syntax expressions would evaluate to the last day of every month？（）

A、 FREQ = MONTHLY； BYMONTHDAY = 31 B、 FREQ = MONTHLY； BYMONTHDAY = -1 C、 FREQ = DAILY； BYDAY = -1 D、 FREQ = MONTHLY； BYDAY = 31 E、 FREQ = DAILY； BYMONTHDAY = LAST_DAY

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第3题

[单选题] General, the best way for replacement of lamp is （）.

A、after the point is reached at which the failures begin to increase rapidly B、before the point is reached at which the failures begin to increase rapidly C、before the point is reached at which the failures begin to increase slowly D、after the point is reached at which the failures begin to increase slowly

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第4题

[单选题] An increase in the heat load to a refrigeration system will cause （）.

A、the suction pressure to decrease B、the suction temperature to increase C、increased ice formation on the evaporator coil D、excessive short cycling of the compressor

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第5题

[单选题] You need to create a schedule that will run a job on the second Friday of each month. What should the repeat interval of the schedule be set to？（）

A、 FREQ = MONTHLY； BYDAY = 2FRI； B、 FREQ = MONTHLY； BYDAY = FRI（2）； C、 FREQ = MONTHLY； BYDAY = FRI2； D、 FREQ = MONTHLY； BYDAY = -2FRI；

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第6题

[单选题] A positive displacement pump is that where the volume of the pump chamber is alternately （） to draw the liquid in and then （） to force the liquid out.

A、increased；decreased B、decreased；increased C、decreased；decreased D、increased；increased

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第7题

[单选题] Your company uses Microsoft Application Virtualization (App-V). When sequencing applications, you receive an error indicating that the App-V Sequencer is unable to save temporary files. You need to ensure that you can sequence applications. What should you do on the App-V Sequencer computer?（）

A、Increase the amount of memory. B、Increase the storage space available to the %TMP% directory. C、Increase the storage space available to the %TEMP% directory. D、Increase the storage space available to the scratch directory.

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第8题

[单选题] Your company uses Microsoft Applicat ion Virtualization (App - V). When sequencing applications, you receive an error indicating that the App - V Sequencer is unable to save temporary files. You need to ensure that you can sequence applications. What should you do on the App - V Sequencer computer？（）

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第9题

[单选题] There is a danger of the starting current that the windings are burnt out（）

A、to increase B、to be so increased C、increased D、being so increased

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第10题

[多选题] You notice that the elapsed time for an important database scheduler Job is unacceptably long. The job belongs to a scheduler job class and window. Which two actions would reduce the job's elapsed time?（）

A、Increasing the priority of the job class to which the job belongs B、Increasing the job's relative priority within the Job class to which it belongs C、Increasing the resource allocation for the consumer group mapped to the scheduler job's job class within the plan mapped to the scheduler window D、Moving the job to an existing higher priority scheduler window with the same schedule and duration E、Increasing the value of the JOB_QUEUE_PROCESSES parameter F、Increasing the priority of the scheduler window to which the job belongs

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