Mechanic Motor Vehicle - 2 Year MCQ 20

 Mechanic Motor Vehicle -  2 Year MCQ 20

MMV 2 YEAR ALL QUESTION ANSWER HERE

331  What is the type of starter motor circuit? 

A  Series type

B  Parallel type

C  Shunt type

D  Compound type 

Correct Answer:- D  Compound type 

332  What is the name of part marked as ‘X’ in the starting circuit?

A  Solenoid switch

B  Plunger

C  Battery 

D  Starter switch

Correct Answer:- B  Plunger

333  What is the name of part marked as ‘X’ in the armature winding? 

A  Pole shoes

B  Brushes

C  Commutator

D  Drive end bracket 

Correct Answer:- C  Commutator

334 : What is the name of part marked as ‘X’ in the armature winding?

A : Brushes 

B : Field coil

C : Commutator 

D : Drive end bracket

Correct Answer:- B : Field coil

335 : What is the working principle of alternator?

A : Ohms law

B : Law of resistance

C : Electromagnetic induction 

D : Lenz’s law 

Correct Answer:- C : Electromagnetic induction 

336 : What is the type of device?

A  Alternator

B : Distributor 

C  Ignition coil

D : Condensor

Correct Answer:- A  Alternator

337 : What is the name of part marked as ‘X’ in the rotor assembly?

A : Connection to rectifier

B : Laminated core

C : Slip ring

D : Field coil

Correct Answer:- C : Slip ring

338 : What is the material used to make diodes?

A : Mica

B : Silicon

C : Alumina foil

D : Graphite

Correct Answer:- B : Silicon

339 : Which part of bendix drive starting system limit the turning of the sleeve on the armature shaft?

A : Pinion 

B : Bendix drive spring

C : Anti drift spring  

D : Fly wheel

Correct Answer:- B : Bendix drive spring

340 : What is the purpose of slot provided in the laminated cylindrical iron core of stator assembly?

A : For lubricantion 

B : For fitting insulated windings 

C : For easy fitting 

D : Provide space for cooling

Correct Answer:- B : For fitting insulated windings 

341 : What is the function of over running clutch in the starting system? 

A : Protect armature from damge

B : Prevent sliding movement of pinion

C : Operate the solenoid

D : Drive the armature shaft

Correct Answer:- A : Protect armature from damge

342 : How the alternator field terminal is connected to the battery?

A : By ignition switch

B : By indicator lamp

C : By charge indicator

D : By voltage regulator

Correct Answer:- A : By ignition switch

343 : What is the function of drive end frame in the alternator?

A : Carriers driving pulley

B : Connecting to spring loaded brush

C : Allow current flow in one direction 

D : Support the pre lubricated sealed bearing

Correct Answer:- D : Support the pre lubricated sealed bearing

344 : What is the function of solenoid switch?

A : Open and close the circuit between primary and secondary

B : Stepdown voltage from primary to secondary winding

C : Close the contact between battery and starting motor

D : Shift the lever to engage the plunger

Correct Answer:- C : Close the contact between battery and starting motor

345 : What is the function of rotor assembly? 

A : Supports pre lubricated scaled bearing

B : Carriers driving pulley and cooling fan

C : Allow the current flow in one direction

D : Supports rectifier mounting plates

Correct Answer:- B : Carriers driving pulley and cooling fan

346 : Which type of winding is connected to the starter switch in the solenoid switch?

A : Pull in winding 

B : Hold in winding  

C : Compound winding 

D : Primary winding 

Correct Answer:- A : Pull in winding 

347 : What is the minimum RPM of crank shaft required to start the engine?

A : 180 RPM 

B : 200 RPM 

C : 100 RPM 

D : 150 RPM

Correct Answer:- C : 100 RPM 

348 : Where the starter motor located?

A : Front side of engine

B : Rear side of engine 

C : Top side of engine 

D : Bottom of engine

Correct Answer:- B : Rear side of engine 

349 : What is the advantage of series winding type starter motor?

A : Produce high starting torque

B : Produce constant starting torue

C : Increase the life of armature 

D : Less cost of maintance

Correct Answer:- A : Produce high starting torque

350 : Why it is necessary to disengage the starter pinion from fly wheel ring gear once the engine has started?

A : Prevent damage to starter motor

B : Prevent wastage of current

C : Reduce the wear on commutator

D : Increase the fuel efficiency

Correct Answer:- A : Prevent damage to starter motor

351 : How the armature winding ends are connected with commutator?

A : By welding 

B : By soldering 

C : By riveting 

D : By brazing 

Correct Answer:- B : By soldering 

352 : What is the purpose of alternator?

A : Produce more electricity at high RPM

B : Produce more electricity at low RPM

C : Produce constant electric supply at high RPM  

D : Produce variable electric supply at high RPM

Correct Answer:- B : Produce more electricity at low RPM

353 : What is the function of diodes?

A : Convert AC to DC

B : Convert DC to AC

C : Step up voltage

D : Step down voltage

Correct Answer:- A : Convert AC to DC

354 : Which device used to prevent damage to the battery and other electrical accessories?

A : Voltage regulator 

B : Current regulator

C : Distributor assembly 

D : Alternator

Correct Answer:- A : Voltage regulator

355 : What is the adverse effect of fly wheel ring to starter pinion ratio is very high?

A : Reduce the starting torque

B : Damage to starter motor 

C : Increase the starting torque

D : Starter motor fails to start 

Correct Answer:- B : Damage to starter motor

356 : Why the brushes are provided with a curvature at the bottom in the starting system?

A : Prevent wear on commutator 

B : Provide more contact with commutator 

C : Ensure proper heat dessipation

D : Provide ventilation to commutator

Correct Answer:- B : Provide more contact with commutator 

357 : What is the contributory cause of starter motor running but not cranking?

A : Abnormally woem brush 

B : Over running clutch slipping

C : Faullty ECM circuit

D : Poor contacting action of ignition

Correct Answer:- B : Over running clutch slipping