1. A control transformer has a 250VA rating with 240V Input & 120V output. What is the largest resistance load that can be place across the secondary winding without causing damage to the winding? (5pts)
Α) 10Ω
Β) 28Ω
C) 57Ω
D) 83Ω
REFER TO THE FOLLOWING DIAGRAM AT THE RIGHT FOR QUESTIONS 3, 4, & 5.
2. This transformer has the nameplate ratings of: Input 240/120, 1000VA, Output 24/12. What is the power rating of each individual coil? Note: Power in = Power out. (4 pts)
A) 500 VA
B) 100 VA
C) 1000 VA
D) 750 VA
3. This transformer has a nameplate rating of: Input 240/120, Output 24/12. What is the output current when the unit is wired for 12volts? (4 pts)
A) 8.3A
B) 41.6A
C) 4.16A
D) 83A
4. The following transformer has the nameplate ratings of: Input 240/120, 1000VA, Output 24/12. How would you make the connections for 240V in and 12V out? (4 pts)
A) Jumper H2 & H3; Jumper X2 & X3
B) Jumper H2 & H3; Jumper X1 & X3 - X2 & X4
C) Jumper H1 & H3-H2 & H4; X2 & X3
D) Jumper H1 & H2 - H3 & H4; X1 & X2 - X3 & X4