## Physics MCQ on AC Generator for NEET, JEE, Medical and Engineering Exam 2021

MCQ on AC Generator: Previous trends reveal that NEET/JEE aspirants find Physics as the most challenging section amongst the other sections. But most of them fail to decipher the reason behind this. This particularly can be as the candidates taking up this examination are predominantly medical aspirants with their subject of interest being Biology. Also, sections like Physics are more on theories, laws, numerical as opposed to Biology which is more of fact-based, life sciences and comprising of substantial explanations.

In this post we are providing you MCQ on AC Generator, which will be beneficial for you in upcoming NEET, AIIMS, JEE, WBJEE, Medical and Engineering Exams.

## MCQ on AC Generator

Q1. The metal detectors installed at airports and other places for security purpose are based on the principle of ________.
a) potential difference
b) electromagnetic difference
c) electromagnetic induction
d) potential energy

(c) electromagnetic induction

Q2. Name two main parts of an AC generator.
a) stator
b) rotor
c) Both 1 and 2
d) None of these

c) Both 1 and 2

Q3. If the coil is placed perpendicular to field lines then the number of lines passing through the coil is ________.
a) Minimum
b) Maximum
c) Zero
d) maybe maximum or minimum

(b) maximum

Q4. AC generator converts ________.
a) Mechanical energy to electrical energy
b) Electrical energy to mechanical energy
c) Heat energy to mechanical energy
d) None of the above

(a) Mechanical energy to electrical energy

Q5. In A.C generator increasing the no. of turns in the coil ________.
a) Decrease the Electromotive force (EMF)
b) Electromotive force(EMF) remains the same
c) Increases the Electromotive force (EMF)
d) Electromotive force (EMF) becomes zero

(c) increases the Electromotive force (EMF)

Q6. What replacement is required to convert an AC generator to DC generator ?
a) Concave magnets with horseshoe magnets
b) Armature with coil
c) Slip rings with split rings
d) None of the above

c) Slip rings with split rings

Q7. The Electromotive force (EMF) developed by the generator depends upon ________.
a) Area of rotating wire
b) Length of rotating wire
d) size of magnet

(b) Length of rotating wire

Q8. An alternator is an electromechanical ac generator.
a) True
b) False

(b) False

Q9. The direction of induced EMF or current is indicated by ________.
a) Fleming’s left-hand rule
b) Fleming’s right-hand rule
c) Faraday’s law of electromagnetic induction
d) None of these

b) Fleming’s right-hand rule

Q10. In alternative current generator, AC current reverse its direction ________.
a) 10 times per second
b) 20 times per second
c) 60 times per second
d) 50 times per second

(d) 50 times per second