MCQOPTIONS
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MCQOPTIONS
This section includes 1177 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
How are starter contacts made? |
| A. | of silver |
| B. | of zinc |
| C. | of copper |
| D. | of brass |
| Answer» E. | |
| 452. |
revolves around the positive orbital? |
| A. | electron |
| B. | molecule |
| C. | neutron |
| D. | proton |
| Answer» B. molecule | |
| 453. |
The process of keeping batteries for long periods of time for charging is called? |
| A. | quick charging |
| B. | rapid charging |
| C. | triple charging |
| D. | high charging |
| Answer» D. high charging | |
| 454. |
Nichrome wire is made from? |
| A. | nickel and brass |
| B. | nickel and copper |
| C. | nickel and zinc |
| D. | nickel and chromium |
| Answer» E. | |
| 455. |
Resonance circuits are used for? |
| A. | in rectifiers |
| B. | in oscillators |
| C. | in amplifiers |
| D. | in amplifiers and oscillators |
| Answer» E. | |
| 456. |
The material used for the filament used in filament bulbs is? |
| A. | tungsten |
| B. | Tentulum |
| C. | Carbon |
| D. | none of the above |
| Answer» E. | |
| 457. |
Has very high start-up torque, which cannot be operated without load? |
| A. | of series motor |
| B. | of shunt motor |
| C. | Of cumulatin compound motor |
| D. | none of these |
| Answer» B. of shunt motor | |
| 458. |
Can three phase supply be converted into phases? |
| A. | By the main switch |
| B. | varicose |
| C. | by scat connection |
| D. | all of the above |
| Answer» D. all of the above | |
| 459. |
Pump won't pump water up if it has leakage? |
| A. | in samson pipe |
| B. | in over head tank |
| C. | in delivery pipe |
| D. | in the pit |
| Answer» B. in over head tank | |
| 460. |
The potential difference which breaks the gun of which dielectric is called? |
| A. | dielectric resistance |
| B. | breakdown voltage |
| C. | dielectric power |
| D. | conductivity |
| Answer» C. dielectric power | |
| 461. |
Where are halogen lamps mainly used? |
| A. | in the playground |
| B. | in the park |
| C. | At the airport |
| D. | in all of the above |
| Answer» E. | |
| 462. |
Which of the following devices is not used for overhead line protection? |
| A. | Earth wire |
| B. | insulator |
| C. | phase driver |
| D. | arching horn |
| Answer» D. arching horn | |
| 463. |
What is the rating of capacitors? |
| A. | in micro ohms |
| B. | in picro ohm |
| C. | in micro farad |
| D. | in all of the above |
| Answer» D. in all of the above | |
| 464. |
What is the method of laying the cable? |
| A. | air laying on racks |
| B. | laying in duct |
| C. | lay directly on the ground |
| D. | All of the above |
| Answer» E. | |
| 465. |
Which effects are used to make electrical equipment? |
| A. | thermal effect |
| B. | electronic effect |
| C. | magnetic effect |
| D. | all of the above |
| Answer» E. | |
| 466. |
What is the rotor of split phase motors? |
| A. | squirrel phase type |
| B. | without winding |
| C. | magnetized |
| D. | wound up |
| Answer» B. without winding | |
| 467. |
What are the advantages of using fluorescent tubes over tungsten filament lamps? |
| A. | more tenure |
| B. | stroboscopic effect ending |
| C. | More starting price |
| D. | Higher Luminous Efficiency |
| Answer» D. Higher Luminous Efficiency | |
| 468. |
In which of the following class can a measuring instrument be placed? |
| A. | deflector |
| B. | Recording |
| C. | Integrating |
| D. | neither of the above |
| Answer» D. neither of the above | |
| 469. |
Will the motor be used to install the mixer grinder? |
| A. | universal motor |
| B. | shaded pole motor |
| C. | stepper motor |
| D. | repulsion induction motor |
| Answer» B. shaded pole motor | |
| 470. |
Carbon arc lamp is used for? |
| A. | in the light of the bedroom |
| B. | in film projector |
| C. | in the hospital ward |
| D. | in study room |
| Answer» C. in the hospital ward | |
| 471. |
Where is the voltmeter connected in the circuit? |
| A. | in parallel |
| B. | in rank order |
| C. | in parallel order |
| D. | none of these |
| Answer» B. in rank order | |
| 472. |
Which effect of electricity is used in filament lamp? |
| A. | thermal effect |
| B. | magnetic effect |
| C. | gas ionization |
| D. | chemical effect |
| Answer» B. magnetic effect | |
| 473. |
What is the use of filament in halogen lamp? |
| A. | nichrome |
| B. | eureka |
| C. | magnin |
| D. | tungsten |
| Answer» E. | |
| 474. |
What is the anode in tagger tube rectifier? |
| A. | of tungsten |
| B. | of graphite |
| C. | of mercury |
| D. | all of the above |
| Answer» C. of mercury | |
| 475. |
Capacity when capacitors are connected in series? |
| A. | neither increases nor decreases |
| B. | increases |
| C. | happens |
| D. | neither of the above |
| Answer» C. happens | |
| 476. |
Small size but high capacity capacitor is? |
| A. | mica capacitor |
| B. | paper capacitor |
| C. | cerasic capacitors |
| D. | electrolytic capacitors |
| Answer» B. paper capacitor | |
| 477. |
Electricity is produced when conductors are rotated in the middle of a magnetic field? |
| A. | Moving |
| B. | stable |
| C. | both static and dynamic |
| D. | none of these |
| Answer» B. stable | |
| 478. |
What is the coupling of primary and secondary coils in a transformer? |
| A. | Electrical |
| B. | mechanical |
| C. | magnetic |
| D. | all these |
| Answer» D. all these | |
| 479. |
The above method of heating the conducting medium is |
| A. | by radiation |
| B. | induction heating |
| C. | Vortex Surface Heating |
| D. | indirect arc heating |
| Answer» C. Vortex Surface Heating | |
| 480. |
Power factor in meter? |
| A. | There is only voltage coil |
| B. | Both current and voltage are coils |
| C. | there is only one coil |
| D. | none of the above |
| Answer» C. there is only one coil | |
| 481. |
On what principle do three phase, three energy meters measure energy? |
| A. | one wattmeter method |
| B. | three wattmeter method |
| C. | two wattmeter method |
| D. | above method |
| Answer» D. above method | |
| 482. |
The frequency of voltage received from the secondary of the transformer is the original frequency? |
| A. | is twice the |
| B. | is half |
| C. | is equal to |
| D. | none of these |
| Answer» D. none of these | |
| 483. |
Which of the following will have the highest torque of the rotor? |
| A. | shaded pole motor |
| B. | universal motor |
| C. | capacitor motor |
| D. | all of the above will be equal |
| Answer» D. all of the above will be equal | |
| 484. |
Silica gel is kept in? |
| A. | in the conservator |
| B. | in the breather |
| C. | in bacholz relay |
| D. | inside the tank |
| Answer» C. in bacholz relay | |
| 485. |
What are secondary electrical devices? |
| A. | with deflecting torque |
| B. | With controlling torque |
| C. | having damping torque |
| D. | all these |
| Answer» E. | |
| 486. |
Can the power factor be increased? |
| A. | by shaded pole motor |
| B. | by synchronous motor |
| C. | by repulsion friend |
| D. | by capacitor motor |
| Answer» C. by repulsion friend | |
| 487. |
The side with high voltage in the transformer is called? |
| A. | low tension line |
| B. | high tension line |
| C. | both A and B |
| D. | none of these |
| Answer» C. both A and B | |
| 488. |
What is the color of the light emitted by a mercury vapor lamp? |
| A. | rose |
| B. | Yellow |
| C. | green-blue mixed |
| D. | white-sky |
| Answer» D. white-sky | |
| 489. |
Can synchronous motor start? |
| A. | with pony motor |
| B. | self starting |
| C. | by supply |
| D. | all of the above |
| Answer» E. | |
| 490. |
What is the rotor of stepper motor? |
| A. | squirrel cage |
| B. | magnetic type |
| C. | winding |
| D. | none of the above |
| Answer» C. winding | |
| 491. |
What should be the resistance of the voltage source in the series translation circuit? |
| A. | Zero |
| B. | Less |
| C. | high |
| D. | none of the above |
| Answer» C. high | |
| 492. |
Lap winding is done in armature? |
| A. | For high current and high voltage |
| B. | For high current and low voltage |
| C. | For low current and high voltage |
| D. | all of the above |
| Answer» C. For low current and high voltage | |
| 493. |
is directly proportional to frequency? |
| A. | Resistance |
| B. | inductive reactance |
| C. | capacitance |
| D. | admission |
| Answer» C. capacitance | |
| 494. |
What happens if a permanent magnet is heated? |
| A. | Magnetic Guns Decrease |
| B. | magnetic properties increase |
| C. | magnetic properties are destroyed |
| D. | all of the above |
| Answer» D. all of the above | |
| 495. |
In a three pin socket, which of the following represents? |
| A. | of earthing |
| B. | of phase |
| C. | of neutral |
| D. | neither of the above |
| Answer» B. of phase | |
| 496. |
What should not be given to a person with shock? |
| A. | Tea |
| B. | coffee |
| C. | Milk |
| D. | all of the above |
| Answer» E. | |
| 497. |
What does the capacitance of a capacitor represent? |
| A. | C |
| B. | V |
| C. | R |
| D. | I |
| Answer» B. V | |
| 498. |
The total amount of magnetic field is known as? |
| A. | as a magnetic field |
| B. | as flux tensile |
| C. | as a flux |
| D. | none of the above |
| Answer» D. none of the above | |
| 499. |
What is the unit of inductance? |
| A. | weber |
| B. | Coolol |
| C. | farad |
| D. | henry |
| Answer» B. Coolol | |
| 500. |
Increasing the negative voltage on the grid increases the plate current? |
| A. | remains unchanged |
| B. | grows |
| C. | is lacking |
| D. | none of the above |
| Answer» D. none of the above | |