Design Features MCQs : This section focuses on the "Design Features". These Multiple Choice Questions (MCQs) should be practiced to improve the Design Features skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
At high voltages, the current transformers are enclosed in a tank.
A. True
B. False
Question 2
Coils of a C.T. are separately wound.
A. True
B. False
Question 3
In a 1000/5 A C.T., the number of secondary turns would be ________
A. 200
B. 199 or 198
C. 5
D. 1000
Question 4
In a shell type of core, the windings are ________
A. in the form of the shell
B. shorted with the primary windings
C. not wound
D. placed on the central limb
Question 5
In the ring type of core, the secondary winding is ________
A. non-uniformly distributed over the core
B. shorted with the primary winding
C. uniformly distributed over the core
D. connected in the form of a ring
Question 6
Mumetal has ________
A. low permeability, high loss
B. high permeability, medium loss
C. medium permeability, high loss
D. high permeability, low loss
Question 7
Perminder has __________
A. medium saturation point of permeability
B. low saturation point of permeability
C. no saturation point of permeability
D. high saturation point of permeability
Question 8
Secondary and primary windings consist of ________
A. copper turns
B. 14 S.W.G copper wire and copper strip respectively
C. iron coils wound around
D. laminations
Question 9
The secondary leakage reactance of a C.T. ____________
A. increases its ratio error
B. decreases its ratio error
C. has no effect on its ratio error
D. increases the impedance of the circuit
Question 10
The windings of a C.T. are ________
A. tied together
B. shorted
C. wound over one another
D. grounded
Question 11
Turns compensation is used to obtain ________
A. to compensate the turns
B. to equalise the turns on the windings
C. to protect the equipment
D. transformation ratio equal to nominal ratio
Question 12
What is the effect of reducing the secondary turns in a C.T. by 1%?
A. transformation ratio reduces by the same value
B. no effect
C. nominal ratio increase by the same value
D. secondary current increases by the same value