Multiple Choice
How can the windings ratio be safely determined for an unmarked transformer?
A) Apply known low voltage ac to the primary and measure the secondary output. The ratio of the voltages is the same as the windings ratio.
B) Standardized wire color codes indicate windings ratio.
C) The turns ratio is the same as the ratio of primary resistance to secondary resistance ratio.
D) either A or C
Correct Answer:
Verified
Correct Answer:
Verified
Q9: The impedance matching characteristic for a transformer
Q22: Autotransformers cannot be used for isolation purposes
Q24: If a dc voltage is input to
Q54: If 10 W of power are applied
Q56: The turns ratio of a transformer (n)is
Q57: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3685/.jpg" alt=" -if the
Q60: When a 1 kΩ load resistor is
Q61: A step -up transformer will increase and
Q63: An autotransformer differs from most transformers in
Q64: If a 12 V battery is connected