Transmission And Distribution Mcqs
Q.1: Which of the following relays is used on long transmission lines?A
A. Impedance relay
B. Mhos relay
C. Reactance relay
D. None of the above
Q.2: The steel used in steel cored conductors is usually__________?>
A. alloy steel
B. stainless steel
C. mild steel
D. high speed steel
Q.3: Which of the following distribution systems is more reliable?=
A. Radial system
B. Tree system
C. Ring main system
D. All are equally reliable
Q.4: Which of the following characteristics should the line supports for transmission lines possess?_
A. Low cost
B. High mechanical strength
C. Longer life
D. All of the above
Q.5: Transmission voltage of 11 kV is normally used for distances up to_____km?J
A. 2025 km
B. 4050 km
C. 6070 km
D. 80100 km
Q.6: A conductor, due to sag between two supports, takes the form of____________?L
A. semi-circle
B. triangle
C. ellipse
D. catenary
Q.7: In AC.S.R. conductors, the insulation between aluminium and steel conductors is_________?Y
A. insulin
B. bitumen
C. varnish
D. no insulation is required
Q.8: Which of the following bus-bar schemes has the lowest cost?;
A. Ring bus-bar scheme
B. Single bus-bar scheme
C. Breaker and a half scheme
D. Main and transfer scheme
Q.9: Owing to skin effect:
A. current flows through the half cross-section of the conductor=
B. portion of the conductor near the surface carries more current and core of the conductor carries less currentm
C. portion of the conductor near the surface carries less current and core of the conductor carries more currento
D. any of the above
Q.10: By which of the following methods string efficiency can be improved?D
A. Using a guard ring
B. Grading the insulator
C. Using long cross arm
D. Any of the above

Related Mcqs

All Subject Mcqs