Materials and Components Ferrimagnetic materials have anti parallel orientation of equal moments of permanent dipoles. True False True False 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, 2 and 3 1 and 3 only 2 and 3 only 1 and 2 only 1, 2 and 3 1 and 3 only 2 and 3 only 1 and 2 only ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The most important set of specifications of transformer oil include viscosity and flash point flash point and viscosity dielectric strength and viscosity dielectric strength and flash point viscosity and flash point flash point and viscosity dielectric strength and viscosity dielectric strength and flash point ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The resistance of a photoconductor Increases with increase in light intensity May increase or decrease with increase in light intensity Decreases with increase in light intensity Remains constant Increases with increase in light intensity May increase or decrease with increase in light intensity Decreases with increase in light intensity Remains constant ANSWER DOWNLOAD EXAMIANS APP
Materials and Components For making a capacitor it is better to have a dielectric having High permittivity Permittivity same as that of air Low permittivity Permittivity which is neither high nor low High permittivity Permittivity same as that of air Low permittivity Permittivity which is neither high nor low ANSWER DOWNLOAD EXAMIANS APP
Materials and Components If a small amount of Cu is added to Ni conductor, then Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres Resistivity of Ni remains the same Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres Resistivity of Ni remains the same Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni ANSWER DOWNLOAD EXAMIANS APP
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