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 27
... battery , B , of about 12 cells of fairly constant E.M.F .; key , K ; platinoid resistance , R. Observations .- ( 1 ) Connect up as in Fig . 12 , where N is the terminal of the needle of V and Qi , Q2 those of the two pairs of quadrants ...
... battery , B , of about 12 cells of fairly constant E.M.F .; key , K ; platinoid resistance , R. Observations .- ( 1 ) Connect up as in Fig . 12 , where N is the terminal of the needle of V and Qi , Q2 those of the two pairs of quadrants ...
Page 29
... battery , B , = ohms . Position of controlling r . Total circuit resistance , Deflection , d . magnet . R = ( r + B + G ) . Figure of merit , 1'08 dR 16. Relation between Deflection and Current in Mirror Galvanometers . Introduction ...
... battery , B , = ohms . Position of controlling r . Total circuit resistance , Deflection , d . magnet . R = ( r + B + G ) . Figure of merit , 1'08 dR 16. Relation between Deflection and Current in Mirror Galvanometers . Introduction ...
Page 30
... battery resistance , b , = ohms . ohms : E Deflections . Box resistance , R. Total resistance , Current , C = ( R + g + b ) = RT RT I Right . Left . Mean , d . " 6 ( 4 ) Plot a calibration " curve having values of C as abscissæ and d as ...
... battery resistance , b , = ohms . ohms : E Deflections . Box resistance , R. Total resistance , Current , C = ( R + g + b ) = RT RT I Right . Left . Mean , d . " 6 ( 4 ) Plot a calibration " curve having values of C as abscissæ and d as ...
Page 31
... ( p . 309 ) ; key , K1 ; battery , B ; and reversing key , K , ( p . 329 ) . Observations .- ( 1 ) Connect up as in Fig . 15 , and adjust the needles of both G and g to zero . ( 2 ) Close K , and K , and Practical Electrical Testing . 31.
... ( p . 309 ) ; key , K1 ; battery , B ; and reversing key , K , ( p . 329 ) . Observations .- ( 1 ) Connect up as in Fig . 15 , and adjust the needles of both G and g to zero . ( 2 ) Close K , and K , and Practical Electrical Testing . 31.
Page 33
... battery , B ; arrangement of coils and magnetic needle , G , to experiment upon , consisting of two bobbins and needle , as follows ( vide p . 270 ) : On the large bobbin there are two distinct circuits of 10 and 30 turns of wire ...
... battery , B ; arrangement of coils and magnetic needle , G , to experiment upon , consisting of two bobbins and needle , as follows ( vide p . 270 ) : On the large bobbin there are two distinct circuits of 10 and 30 turns of wire ...
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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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