Physics In a railway track, two rails are joined end to end with a gap in between them because Accidents due to contraction in winter can be avoided Steel can be saved Accidents due to expansion in summer can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided Steel can be saved Accidents due to expansion in summer can be avoided Air-gaps are necessary for bearing the weight of running train ANSWER DOWNLOAD EXAMIANS APP
Physics The best conductor of electricity among the following is : Copper Iron Silver Aluminium Copper Iron Silver Aluminium ANSWER DOWNLOAD EXAMIANS APP
Physics A transformer works on the principle of Inverter Generator Mutual induction Self induction Inverter Generator Mutual induction Self induction ANSWER DOWNLOAD EXAMIANS APP
Physics Light travels slowest in Vacuum Air Glass Water Vacuum Air Glass Water ANSWER DOWNLOAD EXAMIANS APP
Physics Stars are held together by Magnetic forces Gravitational forces Ionic forces Electrical forces Magnetic forces Gravitational forces Ionic forces Electrical forces ANSWER DOWNLOAD EXAMIANS APP
Physics The frequency of direct current is ________ 50 HZ 60 HZ 100 HZ Zero 50 HZ 60 HZ 100 HZ Zero ANSWER DOWNLOAD EXAMIANS APP
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