⚡Electrical Engineering MCQs
Electrical Engineering MCQs
499 MCQs471
The only difference between construction of D.C generator and A.C generator is that of_______________?
Acarbon brushes
Bcoil
Ccommutator
Dmagnetic field
472
If the secondary coil has Ns turns and the primary Np turns the relation between secondary and primary voltages is given by_____________?
AVs/Vp = Np/Ns
BVs/Vp = Ns/Np
CVp/Vs = Ns/Np
DVp/Vs = Np/Ns
473
Two similar charges each of one coulomb placed in air one meter apart repel each other with a force______________?
A9 x 109N
B9.2 x 104N
C9 x 109N
D9 x 107N
474
A closed surface contains two equal and opposite charges. The net electric flux from the surface will be________________?
Anegative
Bpositive
Czero
Ddata is insufficient
475
Electric intensity being a vector quantity always points_______________?
Aalong the direction of force experienced by a unit positive charge
Bopposite to the direction of force experienced by a unit positive charge
Cperpendicular to the direction of force experienced by a uit positive charge
Dany of above
476
An electric charge at rest produces_______________?
Aonly a magnetic field
Bonly an electric field
Cneither electric field nor magnetic field
Dboth electric and magnetic fields
477
The force per unit charge is know as__________________?
Aelectric flux
Belectric intensity
Celectric potential
Dall of above are same
478
Electric force between two point charges in air or vacuum is F. If we replace air or vacuum by an insulator (dielectric) of relative permitivity Cr the force between the charges will_______________?
Adecrease
Bincrease
Cremain constant
Ddepends upon composition of dielectric
479
The minimum charge on any object cannot be less than_______________?
A1.6 x 10-19C
B3.2 x 10-19C
C9.1 x 109C
Dno definite value exist
480
Potential difference is the work done in moving unit positive charge form one point to another________________?
Ain the direction of electric intensity
Bagainst electric intensity
Cin any direction
Din the direction of electric flux