Practical Electrical Testing in Physics and Electrical Engineering: Being a Course Suitable for First and Second Year Students and Others |
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Page 44
... charge and dis- charge key , K ( p . 328 ) ; well - insulated trough , T , of water contain- ing the cable to be tested as the high resistance . NOTE . All connections and apparatus must be insulated with great care , all insulating ...
... charge and dis- charge key , K ( p . 328 ) ; well - insulated trough , T , of water contain- ing the cable to be tested as the high resistance . NOTE . All connections and apparatus must be insulated with great care , all insulating ...
Page 45
... charge C fully for a few seconds , then immediately raise to a so as to discharge the condenser through G. Note the first throw d corresponding to a quantity K , cou- lombs . ( 3 ) Recharge C fully after connect- ing at s and t , and ...
... charge C fully for a few seconds , then immediately raise to a so as to discharge the condenser through G. Note the first throw d corresponding to a quantity K , cou- lombs . ( 3 ) Recharge C fully after connect- ing at s and t , and ...
Page 46
... Charge Method ) . Introduction . The following " loss of potential " method is suitable for measuring very high ... charged condenser by the very high resistance , and measuring by means of a sensitive electrometer the " time rate of ...
... Charge Method ) . Introduction . The following " loss of potential " method is suitable for measuring very high ... charged condenser by the very high resistance , and measuring by means of a sensitive electrometer the " time rate of ...
Page 48
... Charge Method ) . Introduction . The preceding method with the electro- meter is one of the best for determining the insulation resistance of the condenser itself , for any ballistic method is likely to have its results vitiated by the ...
... Charge Method ) . Introduction . The preceding method with the electro- meter is one of the best for determining the insulation resistance of the condenser itself , for any ballistic method is likely to have its results vitiated by the ...
Page 49
... Charge Method employing Shunts ) . - Introduction . The following galvanometer method of measuring insulation resistance by " loss of potential " is suitable for leaky condensers whose capacity is not accurately known , and consists in ...
... Charge Method employing Shunts ) . - Introduction . The following galvanometer method of measuring insulation resistance by " loss of potential " is suitable for leaky condensers whose capacity is not accurately known , and consists in ...
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Common terms and phrases
abscissæ accurate adjust the galvanometer amperes amps apparatus arrangement axis balance ballistic galvanometer battery C₁ capacity cells centre charge circuit coil condenser connected constant convenient copper Crown 8vo curve d₁ deflection Diagrams dip circle discharge E₁ earth ebonite electrometer farads fixed galvanometer resistance Hence high-resistance horizontal Illustrations inductor Inferences instrument insulated internal resistance K₁ Leclanché cells lines of force magnetic moment magnetizing force magnetometer means measuring method mirror galvanometer mutual induction Note the values Observations.-(1 obtained Ohm's law ohms pairs plates plug pole position potential quadrants quantity of electricity R₁ R₂ Repeat resistance box results as follows reversing rheostat scale screws secohmmeter secohms self-induction sensitive shown in Fig shunt solenoid specimen spot of light standard steady current suitable tabulate as follows tabulate your results tangent galvanometer temperature terminals tested throw tube V₁ V₂ volts Wheatstone bridge wire Woodcuts zero
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