Electric Drives Mock Test 8

10%

Question 1 of 10

1. Full form of PIV.

Peak insert voltage

Paas Inverse volatile

Peak inverse voltage

Peak insert volatile

Question 1 of 10

Question 2 of 10

2. Calculate the average value of thyristor current in 1-Φ Full wave semi-converter for the load (Highly inductive) current=25.65 A and α=18°. (Asymmetrical configuration)

11.54 A

12.15 A

14.52 A

15.48 A

Question 2 of 10

Question 3 of 10

3. Calculate the average value of current for the 3-Φ phase Half-wave uncontrolled rectifier if the supply value is 400 V and resistive load value is 5 Ω.

57.26 A

58.15 A

54.04 A

51.64 A

Question 3 of 10

Question 4 of 10

4. Calculate the value of Crest factor if V_peak=1.5 V and V_r.m.s=2.5 V.

Question 4 of 10

Question 5 of 10

5. Calculate the average value of diode current in 1-Φ Full wave semi-converter for the load (Highly inductive) current=75.2 A and α=41°. (Asymmetrical configuration)

42.15 A

41.78 A

41.18 A

46.16 A

Question 5 of 10

Question 6 of 10

6. Calculate the I_{0 avg} for Single-phase Half Wave rectifier for R-L load using the data: V_m=56 V, ∝=15°, β=30°, R=2 Ω.

.56 A

.44 A

.26 A

.89 A

Question 6 of 10

Question 7 of 10

7. ____________ is the switching frequency of SITH.

55 KHz

100 KHz

105 KHz

91 KHz

Question 7 of 10

Question 8 of 10

8. The problem of short-circuiting in 1-Φ Full wave semi-converter is very common.

True

False

Question 8 of 10

Question 9 of 10

9. 100 V rated 3 SCRs are connected in series. The operation voltage of the string is 200. Calculate the De-rating factor.

.33

.35

.18

.38

Question 9 of 10

Question 10 of 10

10. In Half-wave controlled rectifier calculate the average value of the current for 2.5 Ω resistive load if the supply is sin(5.2t) and firing angle is 26°.

0.12 V

0.8 V

0.15 V

0.21 V

Question 10 of 10