Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

If an 8/9ohm, 4/3ohm and 2/3ohm resistor is connected in star, find its delta equivalent.

A. 4ohm, 3ohm, 2ohm
B. 1ohm, 3ohm, 2ohm
C. 4ohm, 1ohm, 2ohm
D. 4ohm, 3ohm, 1ohm
Answer» B. 1ohm, 3ohm, 2ohm
Discussion
2.

If a 1ohm 2ohm and 32/3ohm resistor is connected in star, find the equivalent delta connection.

A. 34 ohm, 18.67 ohm, 3.19 ohm
B. 33 ohm, 18.67 ohm, 3.19 ohm
C. 33 ohm, 19.67 ohm, 3.19 ohm
D. 34 ohm, 19.67 ohm, 3.19 ohm
Answer» B. 33 ohm, 18.67 ohm, 3.19 ohm
Discussion
3.

Ra is resistance at A, Rb is resistance at B, Rc is resistance at C in star connection. After transforming to delta, what is resistance between A and B?

A. Rc+Rb+Ra*Rb/Rc
B. Ra+Rb+Ra*Rc/Rb
C. Ra+Rb+Ra*Rb/Rc
D. Ra+Rc+Ra*Rc/Rb
Answer» D. Ra+Rc+Ra*Rc/Rb
Discussion
4.

Ra is resistance at A, Rb is resistance at B, Rc is resistance at C in star connection. After transforming to delta, what is resistance between A and C?

A. Ra+Rb+Ra*Rb/Rc
B. Ra+Rc+Ra*Rc/Rb
C. Ra+Rb+Ra*Rc/Ra
D. Ra+Rc+Ra*Rb/Rc
Answer» C. Ra+Rb+Ra*Rc/Ra
Discussion
5.

Ra is resistance at A, Rb is resistance at B, Rc is resistance at C in star connection. After transforming to delta, what is resistance between B and C?

A. Rc+Rb+Rc*Rb/Ra
B. Rc+Rb+Ra*Rb/Rc
C. Ra+Rb+Ra*Rc/Rb
D. Rc+Rb+Rc*Ra/Rb
Answer» B. Rc+Rb+Ra*Rb/Rc
Discussion
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