Materials and Components The resistance of a photoconductor Remains constant Increases with increase in light intensity Decreases with increase in light intensity May increase or decrease with increase in light intensity Remains constant Increases with increase in light intensity Decreases with increase in light intensity May increase or decrease with increase in light intensity ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The materials which become polarized on the application of mechanical stress are called piezoelectric. True False True False ANSWER DOWNLOAD EXAMIANS APP
Materials and Components In a metal, the valence electrons Either B or C Are shared only between neighbouring atoms Are shared by all atoms Are not shared Either B or C Are shared only between neighbouring atoms Are shared by all atoms Are not shared ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The most important set of specifications of transformer oil include viscosity and flash point dielectric strength and flash point dielectric strength and viscosity flash point and viscosity viscosity and flash point dielectric strength and flash point dielectric strength and viscosity flash point and viscosity ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is In the same direction as current Normal to both current and magnetic field None of these In a direction anti parallel to magnetic field In the same direction as current Normal to both current and magnetic field None of these In a direction anti parallel to magnetic field ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Which of the following are true for relative dielectric constant?1. It is dimensionless.2. It is equal to 1 for vacuum.3. It is equal to 1 for all substances. 1 and 2 only 1, 2 and 3 2 and 3 only 1 and 3 only 1 and 2 only 1, 2 and 3 2 and 3 only 1 and 3 only ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS