Physics A dynamo is used to convert Electrical energy into mechanical energy Electrical energy into magnetic energy Magnetic energy into mechanical energy Mechanical energy into electrical energy Electrical energy into mechanical energy Electrical energy into magnetic energy Magnetic energy into mechanical energy Mechanical energy into electrical energy ANSWER DOWNLOAD EXAMIANS APP
Physics Certain substances loose their electrical resistance completely at super low temperature. Such substances are called. Semi conductors Superconductors Dielectrics Perfect conductors Semi conductors Superconductors Dielectrics Perfect conductors ANSWER DOWNLOAD EXAMIANS APP
Physics Materials that usually are good conductors of electricity? Wood Nickel Aluminium Lead Wood Nickel Aluminium Lead ANSWER DOWNLOAD EXAMIANS APP
Physics Two waves, each of amplitude 1.5 mm and frequency 10 Hz, are travelling in opposite direction with a speed of 20 mm/s. The distance in mm between adjacent nodes is : 1.5 1.2 2 1 1.5 1.2 2 1 ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following device is best suited for measuring the temperature inside metallurgical furnaces? Pyrometer Thermometer Thermocouple Thermistor Pyrometer Thermometer Thermocouple Thermistor ANSWER DOWNLOAD EXAMIANS APP
Physics Natural radioactivity was discovered by Ernest Rutherfor Marie Curie Enrico Fermi Henri Becquerel Ernest Rutherfor Marie Curie Enrico Fermi Henri Becquerel ANSWER DOWNLOAD EXAMIANS APP
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