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illustrate how to replace the ht fuse on a 6-pole and 4-pole structureans a open switch on 6-pole or 4-poleb connect the discharge rod between earth
q what is the function of ct and pt and where they are usedans the full form of ct is current transformer and is used for calculating of current the
q required conditions for connecting two transformers in parallelansa voltage rating should be sameb per unit impedance should be samec phase
q how do you calculate the insulation resistance of transformer and what is the minimum valueans the insulation resistance of the transformer will
precautions to be taken in carrying out repairs on ht and lt switch gearans the following precautions to be taken in carrying out repairs on lt and
q different kinds of high-tension fuses and low-tension fuses ans there are two kinds of fuses they area lv fuses - 1 hrc cartridge fuses - 2
q if a feeder circuit-breaker trips what action is neededans first isolate the faulty feeder check the faulty area on which fault the breaker was
q function of circuit - breaker difference between circuit breaker and isolatorans the function of circuit breaker is to break the electrical
what are the precautions to be taken before basic work on electrical installationsans before starting any electrical works on installations
whose principle or law states that each point on a wave front may be considered a new wave source is itw snells lawx huygens principley youngs lawz
holes are majority carriers ina p-type semiconductors b n-type semiconductorsc insulators d
permanent magnets are made ofa soft magnetic materials b hard magnetic materialsc semi
the critical temperature above which the ferromagnetic materials lose their magnetic property is known asa
ceramics are good a insulators b conductors c superconductors
bronze is an alloy of a copper b aluminium c silver d carbon ansbronze is an alloy of
the property due to which the resistance of some metal or compound vanishes under certain conditions isa semi
the material with lowest resistivity isa constantan b silverc manganin d
the focal length of a concave spherical mirror is equal to 1 meter what is the radius of curvature of this mirror ansthe radius of curvature of this
assume a ray of light is incident on a smooth reflecting surface at an angle of incidence of 15 degrees to the normal what is the angle between the
explain the properties and application of glassglass ordinary glass is a fine insulator but is too brittle to be used for anything although
give the properties and application of pvcpolyvinylchloride pvc it is replacing rubber to a great extent in veracious applications there is pvc
give a few applications of superconductors also give three applications of superconductorsapplication of superconductors in electrical and electronic
explain the suitability of aluminium that is used as electrical conducting materialsaluminium conductors are appropriate for ambient and very
explain the suitability of copper that is used as electrical conducting materialscopper pure annealed is utilized
explain the effect of a dielectric on the behaviour of a capacitor if two parallel plates are separated by a distance d meters in vacuum and are kept