The device that decreases the voltage at a substation for its supply, is:
A
Step-up transformer
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
kWh meter
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Step-down transformer
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
MCB
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is C Step-down transformer A step-down transformer is used to decrease the voltage in electrical power supply. The voltage coming from a higher substation is decreased to a desired level, by passing it through a step-down transformer which consists of two coils wound on two soft iron cores. The primary coil contains more number of coils than the secondary one. A step-up transformer does the opposite job of a step-down transformer.