【Daily Question 20090225】Multiple-choice question
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【Daily Question 20090225】Multiple-choice question 1. Question: The accuracy class of electrical measuring instruments is determined by the ? of the instrument (C) indicates. A. Maximum relative error B. Maximum absolute error C. Maximum reference error 2. Question: Errors resulting from defects in the design, structure, or manufacturing of instruments belong to (A). A. Fundamental error B. Absolute error C. Additional error 3. Question: In the case of electrical indicating instruments, errors occur due to the instrument not being placed in accordance with specified requirements; such errors are classified as (C) errors. A、Basic B、Random C、Additional. 4. Question: To measure a value, several identical measurements are taken and their averages are calculated; this is done in order to eliminate (C). A) Systematic error B) Instrument error C) Random error 5. Question: When using instruments that rely on electromagnetic or electric forces as driving torque for measurement, it is sometimes necessary to rotate the instrument 180º and take another measurement, then calculate the average. The purpose of this is to (A). A) Eliminate the influence of external magnetic fields B) Eliminate tilt errors C) Eliminate imbalance errors.
1、A 2、A 3、C 4、C 5、A
【Daily Question 20090225】Multiple-choice question 1. Question: The accuracy class of electrical measuring instruments is determined by the ? of the instrument Indicate. C. Maximum reference error 2. Question: Errors resulting from defects in the design, structure, or manufacturing of instruments fall under ( ). A. Basic error 3. Question: In the case of electrical indicating instruments, errors occur when they are placed in locations that do not meet the specified requirements, resulting in ( ) errors. c Additional. 4. Question: To measure a value, several identical measurements are taken and their averages are calculated; this is done in order to eliminate ( ). C、Random error 5. Question: When using instruments that rely on electromagnetic or electric forces as driving torques for measurement, it is sometimes necessary to rotate the instrument 180º and take another measurement, then calculate the average. The purpose of this is to ( ). A、Eliminate the influence of fixed external magnetic fields
Answer: 1, A; 2, A; 2, C; 3, C; 4, C; 5, A
1. Question: The accuracy class of electrical measuring instruments is indicated by the instrument’s (C). A. Maximum relative error B. Maximum absolute error C. Maximum reference error 2. Question: Errors resulting from defects in the design, structure, or manufacturing of instruments belong to (A). A. Basic error B. Absolute error C. Additional error 3. Question: In the case of electrical indicating instruments, errors occur due to the instrument not being placed in accordance with the specified requirements; such errors are classified as (C) errors. A、Basic B、Random C、Additional. 4. Question: To measure a value, several identical measurements are taken and their averages are calculated; this is done in order to eliminate (C). A) Systematic error B) Instrumental error C) Random error 5. Question: When using instruments that rely on electromagnetic or electric forces as driving torques for measurement, it is sometimes necessary to rotate the instrument 180º and take another measurement, then calculate the average. The purpose of this is to (A). A) Eliminate the influence of external magnetic fields B) Eliminate tilt errors C) Eliminate imbalance errors.
1 C 2 A 3 C 4 C 5 A
1 C 2 A 3 C 4 C 5 A
1. Question: The accuracy class of electrical measuring instruments is determined by the ? of the instrument Represents (C). A. Maximum relative error B. Maximum absolute error C. Maximum reference error 2. Question: Errors that arise due to defects in the design, structure, or manufacturing process of an instrument belong to (A). A. Basic error B. Absolute error C. Additional error 3. Question: In the case of electrical indicating instruments, errors occur when they are placed in positions that do not meet the specified requirements; such errors are classified as (C) errors. A、Basic B、Random C、Additional. 4. Question: To measure a value, several identical measurements are taken and their averages are calculated; this is done in order to eliminate (C). A) Systematic error B) Instrumental error C) Random error 5. Question: When using instruments that rely on electromagnetic or electric forces as driving torque for measurement, it is sometimes necessary to rotate the instrument 180º and take another measurement, then calculate the average. The purpose of this is (A). A) To eliminate the influence of external magnetic fields B) To eliminate tilt errors C) To eliminate imbalance errors.
My choices: 1. A 2. A 3. C 4. C 5. A
1,A;2,A;3,C;4,C;5,A
1. Question: The accuracy class of electrical measuring instruments is indicated by the instrument’s (C, maximum allowable error). A. Maximum relative error B. Maximum absolute error C. Maximum reference error 2. Question: Errors resulting from defects in the design, structure, or manufacturing of instruments belong to (A. Basic error). A. Basic error B. Absolute error C. Additional error 3. Question: In electrical indicating instruments, errors occur due to the instrument not being placed in accordance with specified requirements; such errors are (C. Additional) errors. A、Basic B、Random C、Additional. 4. Question: To measure a value, several identical measurements are taken and their averages are calculated; this is done to eliminate (C, random error). A) Systematic error B) Instrument error C) Random error 5. Question: When using instruments that rely on electromagnetic or electric forces as driving torque for measurement, it is sometimes necessary to rotate the instrument 180º and take another measurement, then calculate the average. The purpose of this is to (A, eliminate the influence of fixed external magnetic fields). A) Eliminate the influence of fixed external magnetic fields B) Eliminate tilt errors C) Eliminate imbalance errors.
1. Question: The accuracy class of electrical measuring instruments is indicated by the letter C of the instrument. A. Maximum relative error B. Maximum absolute error C. Maximum reference error 2. Question: Errors resulting from defects in the design, structure, or manufacturing of instruments belong to (C). A. Basic error B. Absolute error C. Additional error 3. Question: In the case of electrical indicating instruments, errors occur due to the instrument not being placed in accordance with the specified requirements, which leads to (A) error. A、Basic B、Random C、Additional. 4. Question: To measure a value, several identical measurements are taken and their averages are calculated; this is done in order to eliminate (C). A) Systematic error B) Instrument error C) Random error 5. Question: When using instruments that rely on electromagnetic or electric forces as driving torques for measurement, it is sometimes necessary to rotate the instrument 180º and take another measurement, then calculate the average. The purpose of this is to (C). A) Eliminate the influence of external magnetic fields B) Eliminate tilt errors C) Eliminate imbalance errors.
1. Question: The accuracy class of electrical measuring instruments is indicated by the letter C of the instrument. A. Maximum relative error B. Maximum absolute error C. Maximum reference error 2. Question: Errors caused by defects in the design, structure, or manufacturing process of instruments belong to (C). A. Fundamental error B. Absolute error C. Additional error 3. Question: In electrical indicating instruments, errors occur due to the instrument not being placed in accordance with the specified requirements, which results in (A) error. A、Basic B、Random C、Additional. 4. Question: To measure a value, several identical measurements are taken and their averages are calculated; this is done in order to eliminate (C). A) Systematic error B) Instrument error C) Random error 5. Question: When using instruments that rely on electromagnetic or electric forces as driving torque for measurement, it is sometimes necessary to rotate the instrument 180º and take another measurement, then calculate the average. The purpose of this is to (C). A) Eliminate the influence of external magnetic fields B) Eliminate tilt errors C) Eliminate imbalance errors.
1、A 2、A 3、C 4、C 5、A
1 A 2 A 3 C 4 C 5 A