MCQ-Set-9 Power systems

Electrical engineering

MCQ related to Testing and Commissioning of Electrical Equipment (TCEE)

Set : 9

81. In SF6 type circuit breaker which mechanism is used. ?

A) pneumatic spring
B) hydraulic
C) solenoid
D) spring

... Answer is A)
pneumatic spring

82. Not a circuit breaker test ?

A) making capacity test
B) duty cycle test
C) short time current test
D) spring corrosive teat

... Answer is D)
spring corrosive test

83. Not a type of lighting arrester ?

A) rod gap
B) sphere gap
C) lead oxide
D) semiconductor arrester

... Answer is D)
semiconductor arrester

84. isolator operat on....... condition ?

A) short circuit
B) no load
C) full load
D) abnormal

... Answer is B)
no load condition

85. ....... is the shortest path between two conductive parts through the surface of insulation ?

A) creepage
B) clearance
C) ground clearance
D) insulation distance

... Answer is A)
creepage

86. metal body of equipment connected with the ground is called ?

A) short
B) earthing
C) loading clearance
D) connecting

... Answer is B)
earthing

87. which is not method of earthing ?

A) spring earthing
B) plate earthing
C) pipe earthing
D) coil earthing

... Answer is A)
spring earthing

88. maximum permissible earthing resistance for large power station ?

A) 0.50 Ohm
B) 1 Ohm
C) 5.00 Ohm earthing
D) 0.80 Ohm

... Answer is A)
0.50 Ohm

89. the necessary parts are joined by a wire but the the wire is not connected to earth electrode is called..... ?

A) earthing
B) grounding
C) bonding
D) connecting

... Answer is B)
grounding

90. to eliminate static electric charge used ?

A) earthing
B) grounding
C) bonding
D) connecting

... Answer is C)
bonding

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