Electromagnetic Theory Inductances Online Exam Quiz
Electromagnetic Theory Inductances GK Quiz. Question and Answers related to Electromagnetic Theory Inductances. MCQ (Multiple Choice Questions with answers about Electromagnetic Theory Inductances
The equivalent inductances of two coils 2H and 5H in series aiding flux with mutual inductance of 3H is
Options
A : 10
B : 30
C : 1
D : 13
The equivalent inductance of two coils with series opposing flux having inductances 7H and 2H with a mutual inductance of 1H.
Options
A : 10
B : 7
C : 11
D : 13
Find the inductance of a coil with turns 50, flux 3 units and a current of 0.5A
Options
A : 150
B : 300
C : 450
D : 75
Calculate the emf of a coil with turns 100 and flux rate 5 units.
Options
A : 20
B : -20
C : 500
D : -500
Calculate the mutual inductance of two tightly coupled coils with inductances 49H and 9H.
Options
A : 21
B : 58
C : 40
D : 49/9
A coil is said to be loosely coupled with which of the following conditions?
Options
A : K>1
B : K<1
C : K>0.5
D : K<0.5
The expression for the inductance in terms of turns, flux and current is given by
Options
A : L = N d?/di
B : L = -N d?/di
C : L = Ni?
D : L = N?/i
The inductance of a coaxial cable with inner radius a and outer radius b, from a distance d, is given by
Options
A : L = ?d ln(b/a)/2?
B : L = 2? ?d ln(b/a)
C : L = ?d/ln(b/a)
D : L = 0
With unity coupling, the mutual inductance will be
Options
A : L1 x L2
B : L1/L2
C : ?(L1 x L2)
D : L2/L1
The inductance is proportional to the ratio of flux to current. State True/False.
Options
A : True
B : False
C :
D :
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