【单选题】【消耗次数:1】
熔断器在低压配电系统和电力驱动系统中主要起( )保护作用,因此,熔断器属保护电器。
轻度过载
短路
失压
欠压
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相关题目
【判断题】 熔断器在电力拖动系统中实现过载和短路保护作用的保护电器,通常将它的熔体串联在被保护的电路中。
①  正确
②  错误
【判断题】 熔断器可起到短路保护作用。
①  正确
②  错误
【单选题】 熔断器作为短路保护的电器,它是()于被保护电路中的。
①  串接
②  串接或并接都不可以
③  并接
④  串接或并接都可以?
【单选题】 熔断器主要作为电路的短路保护元件。?
①  正确
②  错误
【判断题】 RN2型户的式高压熔断器,即可体短路保护,又可作过载保护。
①  正确
②  错误
【单选题】 保护晶闸管,可选用()型熔断器.
①  A.RLS1
②  B.RC1A
③  C.RT0
④  D.RL1
【单选题】 熔断器的作用是()。
①  控制行程
②  控制速度
③  短路或严重过载
④  弱磁保护
【单选题】 在高压电器中熔断器属于()。
①  开关电器
②  量测电器
③  保护电器?
④  组合电器
【多选题】 不属于熔断器的作用是().
①  A.控制行程
②  B.控制速度
③  C.短路或严重过载
④  D.弱磁保护
【单选题】 熔断器在电动机控制线路中的作用是( )。
①  短路保护
②  过载保护
③  缺相保护
④  电流不平衡运行保护
随机题目
【单选题】 An example of dramatic monologue is _____________.
①  Don Juan
②  When We Two Parted
③  My Last Duchess
④  The Waste Land
【单选题】 The heroine Tess in Tess of the Durbervilles seems to be led to her final destruction step by step by ______, as Hardy says at the end of the novel: “Justice was done, and the President of the Immortals had ended his sport with Tess.”
①  Angel Clare
②  Alec
③  Fate
④  Jude
【单选题】 In depiction of his characters, Dickens is famous for_____.
①  those innocent, virtuous, persecuted, hopeless child characters
②  those horrible and grotesque characters
③  those broadly humorous or comical ones
④  all the above
【单选题】 Which of the following writing is not the work by Charles Dickens?
①  Tale of Two Cities
②  Hard Times
③  Oliver Twist
④  Sons and Lovers
【单选题】 Wuthering Heights is known today as __________most fascinating novel.
①  Charlotte Bront?’s
②  Anne Bront?’s
③  Emily Bront?’s
④  George Eliot’s
【单选题】 Hardy’s local-colored works are known as “novels of character and _____.”
①  personality
②  nature
③  domestic life
④  environment
【单选题】 ____ is not a Victorian novelist.
①  Charles Dickens
②  George Eliot
③  William Makepeace Thackeray
④  D. H. Lawrence
【单选题】 Chronologically the Victorian period roughly coincides with the reign of Queen _____ who ruled over England from 1836 to 1901.
①  Elizabeth
②  Victoria
③  Mary
④  Anne
【单选题】 Who is the primary narrator of the novel Wuthering Heights?
①  Catherine
②  Heathcliff
③  Nelly
④  Lockwood
【单选题】 “__________” is Byron’s masterpiece, a great comic epic of the early 19th century. It is a poem based on a traditional Spanish legend of a great lover and seducer of women.
①  Child Harold’s Pilgrimage
②  Don Juan
③  The Prisoner of Chillon
④  The Island