Related Questions

Which of the following resistances can be measured by conducting insulation resistance test on a synchronous motor ?
A Phase to phase winding resistance
B Stator winding to earthed frame
C Rotor winding to earthed shaft
D All of the above
Which method can be used for absolute measurement of resistances?
A Lorentz method
B Raleigh method
C Ohm's law method
D Wheatstone bridge method
In a series parallel circuit, any two resistances in the same current path must be in
A Series with each other
B Parallel with each other
C Series with the voltage source
D Parallel with the voltage source
Which of the following materials is used for making coils of standard resistances ?
A Copper
B Nichrome
C Platinum
D Manganin
In a series circuit with unequal resistances
A The highest resistance has the most of the current through it
B The lowest resistance has the highest voltage drop
C The lowest resistance has the highest current
D The highest resistance has the highest voltage drop
In a Wien-bridge oscillator, if the resistances in the positive feedback circuit are decreased, the frequency ___________
A Remains the same
B Decreases
C Increases
D Insufficient data
With increase in impurities in metals, their corrosion resistances
A Increase
B Decrease
C Remain same
D May increase or decrease ; depending on the type of metal
The alloy used for making electrical resistances and heating elements is
A Nichrome
B Invar
C Magnin
D Elinvar
If an inductance is connected in one arm of bridge and resistances in the remaining three arms
A the bridge can always be balanced
B the bridge cannot be balanced
C the bridge can be balanced if the resistances have some specific values
D none of the above
Which of the following resistances is not involved in a gas phase catalytic (gas- solid) reaction?
A Ash resistance
B Gas film and pore surface diffusion resistances for reactants
C Surface phenomenon resistance
D Gas film and pore surface diffusion resistances for products

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