Deck 6: The Control Transformer

Question 1

There is a turns ratio of ____________________ between each primary winding and the secondary winding.

Answer 1

2:1,2 to 1,two to one

Question 2

When one side of the control transformer is not grounded, it is generally referred to as a(n) ____________________ system.

Answer 2

floating

Question 3

Control transformers generally have screw terminals connected to the primary and secondary leads.

Answer 3

True

Question 4

How do you determine the rated current of a transformer?

Question 5

Why is it that the secondary fuse size can be set at a lower percentage of the rated current?

Question 6

Many industries prefer to ground the control system and it is a very common practice.

Question 7

What is the voltage on which most magnetic control systems operate?

Question 8

Most control transformers are made with one primary winding and two secondary windings.

Question 9

High impedance voltmeters can indicate some amount of voltage caused by the capacitance of the ground and induced voltage produced by surrounding magnetic fields. These are generally referred to as ____________________ voltages.

Question 10

Magnetic control systems generally operate on 240 volts.

Question 11

Control transformers are generally protected by fuses or ____________________.

Question 12

When one side of the secondary winding of a control transformer is grounded, the control system is referred to as a(n) ____________________ system.

Question 13

How is accurate voltage measurement made in a float control system?

Question 14

How is voltage tested if one side of the control transformer is grounded?

Question 15

Protection can be placed on the primary or secondary side of the control transformer.