Load flows - Electrical Engineering (MCQ) questions and answers

1)   Which among the following quantities are to be determined in voltage controlled bus?

a. P and Q
b. Q and |V|
c. |V| and δ
d. Q and δ
Answer  Explanation 

ANSWER: Q and δ

Explanation:
No explanation is available for this question!


2)   Which among theses quantities are to be determined in slack bus?

a. P and Q
b. Q and |V|
c. |V| and δ
d. Q and δ
Answer  Explanation 

ANSWER: P and Q

Explanation:
No explanation is available for this question!


3)   Which among the following buses constitute the maximum number in a power system?

a. Slack bus
b. P Q bus
c. P V bus
d. All of these
e. None of these
Answer  Explanation 

ANSWER: P Q bus

Explanation:
No explanation is available for this question!


4)   What percentage of buses in the power system are generator buses?

a. 5 %
b. 25 %
c. 70 %
d. 10 %
Answer  Explanation 

ANSWER: 10 %

Explanation:
No explanation is available for this question!


5)   Which among the following quantities are specified at the generator bus?

a. P and Q
b. P and |V|
c. Q and |V|
d. P and δ
Answer  Explanation 

ANSWER: P and |V|

Explanation:
No explanation is available for this question!


6)   Which among the following quantities are specified at the load bus?

a. P and Q
b. P and |V|
c. Q and |V|
d. P and δ
Answer  Explanation 

ANSWER: P and Q

Explanation:
No explanation is available for this question!


7)   Why are load flow studies carried out?

a. To study of stability of the system
b. For fault calculations
c. For planning the power system
d. All of these
Answer  Explanation 

ANSWER: For planning the power system

Explanation:
No explanation is available for this question!