【判断题】【消耗次数：1】
变压器的变比为k，在高压侧做空载试验求得的激磁参数与在低压侧做空载试验求得?的激磁参数，其欧姆值之比为k2，而标么值之比为1。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
一台单相变压器进行空载试验，在高压侧加额定电压进行测量，或低压侧加额定电压? 进行测量，所测得损耗_____。
①
不相等且相差较大；?
②
折算后相等；?
③
相等。
【单选题】
一台变比K=3的三相变压器，在低压侧加额定电压，测出空载功率P0=3000W，若在高压侧加额定电压，测得功率为().
①
A.1000瓦
②
B.3000瓦
③
C.9000瓦
④
D.2000瓦
【单选题】
一台变单相压器在高压边做空载实验求得的励磁参数和在低压边做空载实验求得的参数应（）。假设<imgwidth="184"height="48"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD36321.png">.
①
大<imgwidth="40"height="43"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD36433.png">倍
②
小<imgwidth="40"height="43"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD36556.png">
③
一样大
【单选题】
一台变单相压器在高压边做空载实验求得的励磁参数和在低压边做空载实验求得的参数应（）。假设<imgwidth="230"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD36321.png">.
①
大<imgwidth="50"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD36433.png">倍
②
小<imgwidth="50"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTD.files/DJYTD36556.png">
③
一样大
随机题目
【单选题】
The medicine is on sale everywhere. You can get it at ______ chemist’s.
①
each
②
some
③
certain
④
any
【单选题】
The computer has brought about surprising technological changes ____ we organize and produce information.
①
in a way
②
in the way
③
in that way
④
in no way
【单选题】
When Mr. Jones gets old, he will ____ his business to his son.
①
take over
②
hand over
③
think over
④
get over
【单选题】
The ____ of Liberty was dedicated on an island in Upper New York Bay in 1886.
①
Status
②
Statue
③
Stature
④
State
【单选题】
John _______ to be a polite man. But in fact he is very rude.
①
pretends
②
assures
③
affords
④
melts
【单选题】
After the war, a character called Uncle Sam began appearing in political cartoon, his from ____ from an earlier cartoon character called Brother Jonathan.
①
involving
②
changing
③
evolving
④
altering
【单选题】
A study suggests that even ____ exercise may lead to reduced iron in the blood of women.
①
modern
②
moderate
③
excess
④
excessive
【单选题】
If a person talks about his weak points, his listener is expected to say something in the way of ____.
①
persuasion
②
remedy
③
encourage
④
compromise
【单选题】
As a teacher, you should not _______ the students from asking questions in class.
①
ruin
②
restrain
③
import
④
impose
【单选题】
Earthquake survival supplies include a torch, a spade, some rope and a radio ____.
①
conceiver
②
receiver
③
perceiver
④
deceiver