Physics The purpose of choke in a fluorescent lamp is : To decrease the resistance To increase the current flow To decrease the current flow Ro decrease the voltage momentarily To decrease the resistance To increase the current flow To decrease the current flow Ro decrease the voltage momentarily ANSWER DOWNLOAD EXAMIANS APP
Physics An electron and a proton starting from rest get accelerated through potential difference of 100 kV. The final speed of the electron and the proton are Ve and Vp respectively. Which of the following relations is correct? Ve < Vp Ve > Vp Cannot be determined Ve = Vp Ve < Vp Ve > Vp Cannot be determined Ve = Vp ANSWER DOWNLOAD EXAMIANS APP
Physics Superconductors are those elements Which conduct electricity only at super-high temperatures Which turn into insulators at very low temperatures Whose resistance falls almost to zero at very low temperatures Whose conductivity is intermediate between metals and insulators Which conduct electricity only at super-high temperatures Which turn into insulators at very low temperatures Whose resistance falls almost to zero at very low temperatures Whose conductivity is intermediate between metals and insulators ANSWER DOWNLOAD EXAMIANS APP
Physics A device used for converting a.c. into d.c. is called Transformer Dynamo Induction coil Rectifier Transformer Dynamo Induction coil Rectifier ANSWER DOWNLOAD EXAMIANS APP
Physics A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is : 0.12777777777778 0.12638888888889 0.21111111111111 0.20902777777778 0.12777777777778 0.12638888888889 0.21111111111111 0.20902777777778 ANSWER DOWNLOAD EXAMIANS APP
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