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MCQ - Mechanical TNPSC JTO
JTO - 540 - Trade - Workshop Calculation Science - 540 UNIT 5 Basic Electricity

176)   

Magnetic field lines always start from...? 

A.
B.
C.
D.
Answer: C
177)   

A device that allows current in only one direction is...?

A.
B.
C.
D.
Answer: D
178)   

What happens to the resistance of a wire when its diameter increases? 

A.
B.
C.
D.
Answer: B
179)   

In parallel connection, voltage across all components is...?

A.
B.
C.
D.
Answer: B
180)   

Electric current is defined as...? 

A.
B.
C.
D.
Answer: C
181)   

Which quantity is measured in Ohms?

A.
B.
C.
D.
Answer: D
182)   

Which metal is used in electric fuse wire?

A.
B.
C.
D.
Answer: C
183)   

The commercial unit of electrical energy is...? 

A.
B.
C.
D.
Answer: C
184)   

Electrical energy is converted into heat in...?

A.
B.
C.
D.
Answer: C
185)   

Which one is a non-conductor of electricity? 

A.
B.
C.
D.
Answer: D
186)   

The resistance of a wire depends on...?

A.
B.
C.
D.
Answer: D
187)   

 SI unit of magnetic induction is...? 

A.
B.
C.
D.
Answer: B
188)   

Which instrument is used to measure potential difference?

A.
B.
C.
D.
Answer: B
189)   

A transformer works on...? 

A.
B.
C.
D.
Answer: D
190)   

A 100 W bulb glows brighter than a 40 W bulb because...? 

A.
B.
C.
D.
Answer: A
191)   

In India, domestic electricity is supplied at...?

A.
B.
C.
D.
Answer: B
192)   

The unit of magnetic flux is...?

A.
B.
C.
D.
Answer: C
193)   

Electric motor works on the principle of...?

A.
B.
C.
D.
Answer: C
194)   

Unit of self-inductance is...?

A.
B.
C.
D.
Answer: C
195)   

In parallel connection, total resistance...?

A.
B.
C.
D.
Answer: C
196)   

Mutual induction occurs between...?

A.
B.
C.
D.
Answer: B
197)   

Horsepower is equal to...? 

A.
B.
C.
D.
Answer: B
198)   

What happens when a fuse blows?

A.
B.
C.
D.
Answer: B
199)   

When current flows through a wire, it produces...? 

A.
B.
C.
D.
Answer: C
200)   

Resistance is inversely proportional to...?

A.
B.
C.
D.
Answer: B