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Mechanical - 540 UNIT 5 Basic Electricity - MCQ

76)   

 Self-induction occurs in...?

A.
B.
C.
D.
Answer: B
77)   

What is the resistance if current = 3A and voltage = 12V?

A.
B.
C.
D.
Answer: B
78)   

What causes electric shock?

A.
B.
C.
D.
Answer: C
79)   

What does a transformer do?

A.
B.
C.
D.
Answer: C
80)   

Unit of magnetic induction is...? 

A.
B.
C.
D.
Answer: B
81)   

A device that opposes the flow of current is called...?

A.
B.
C.
D.
Answer: C
82)   

The flow of electrons in a circuit is called...? 

A.
B.
C.
D.
Answer: D
83)   

Which of the following is a source of AC current?

A.
B.
C.
D.
Answer: B
84)   

What is the EMF of a cell?

A.
B.
C.
D.
Answer: C
85)   

 In Ohm’s law, V = IR. If I = 0, then V = ?

A.
B.
C.
D.
Answer: C
86)   

1 kilowatt-hour is equal to...?

A.
B.
C.
D.
Answer: D
87)   

Which of these wires is usually connected to the metal body of appliances? 

A.
B.
C.
D.
Answer: C
88)   

In which connection does the failure of one component stop the whole circuit?

A.
B.
C.
D.
Answer: B
89)   

What is the role of an MCB (Miniature Circuit Breaker)? 

A.
B.
C.
D.
Answer: B
90)   

If the resistance increases, the current will...?

A.
B.
C.
D.
Answer: B
91)   

Which among the following is NOT a conductor?

A.
B.
C.
D.
Answer: C
92)   

What does a capacitor store?

A.
B.
C.
D.
Answer: C
93)   

What is the SI unit of power?

A.
B.
C.
D.
Answer: C
94)   

What is the symbol for an electric cell?

A.
B.
C.
D.
Answer: A
95)   

 Energy = Power × _______?

A.
B.
C.
D.
Answer: B
96)   

What is used to convert DC to AC?

A.
B.
C.
D.
Answer: C
97)   

What type of current is produced by a cell?

A.
B.
C.
D.
Answer: B
98)   

 In a series circuit, total resistance is...?

A.
B.
C.
D.
Answer: A
99)   

The instrument used to measure current is...?

A.
B.
C.
D.
Answer: C
100)   

Who discovered electromagnetic induction?

A.
B.
C.
D.
Answer: B