AP ECET EEE 2018-6

1. A mho relay is a ______

A. voltage restrained directional relay
B. voltage controlled over current relay
C. directional restrained over current relay
D. directional restrained over voltage relay

Answer : A. voltage restrained directional relay
Explanation:-

2. Buchholz relay provides protection of the transformer from _______

A. External faults
B. Internal faults
C. Lightening faults
D. Dielectric breakdown

Answer : B. Internal faults
Explanation:-

3. A differential protection system responds to the _______ of the two electrical quantities

A. Arithmetic difference
B. Arithmetic sum
C. Vectorial difference
D. Vector sum

Answer : C. Vectorial difference
Explanation:-

4. The transfer of electrical energy from consumers localities to the consumers premises is called ______

A. Primary transmission
B. Primary Distribution
C. secondary transmission
D. secondary distribution

Answer : D. secondary distribution
Explanation:-

5. The capacitive effect is negligible in

A. short transmission lines
B. medium transmission lines
C. long transmission lines
D. medium and long transmission lines

Answer : A. short transmission lines
Explanation:-

6. Surge impedance of a transmission line is given by

A. square root of (L/C)
B. square root of (C/L)
C. square root of (LC)
D. square root of (1/LC)

Answer : A. square root of (L/C)
Explanation:-

7. If the conductor diameter increases, inductance of the line

A. decreases
B. increases
C. remains same
D. equal to zero

Answer : B. increases
Explanation:-

8. The first HVDC scheme in India is _____

A. Vindhyachal back to back system
B. chandrapur - padghe scheme
C. Delhi - Rihand 500KV system
D. Sileru - Barsoor system

Answer : D. Sileru - Barsoor system
Explanation:-

9. ACSR conductor implies

A. All conductors surface treated and realigned
B. Aluminium conductor steel reinforced
C. Anode current sinusoidal run
D. Anodised core smooth run

Answer : B. Aluminium conductor steel reinforced
Explanation:-

10. Which of the following equipment is not used in the substation?

A. shunt reactor
B. exciters
C. voltage transformers
D. series capacitors

Answer : B. exciters
Explanation:-