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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.
| 551. |
What is the value of power factor in a capacitive circuit? |
| A. | zero leggings |
| B. | Zero leading |
| C. | Zero |
| D. | Unit |
| Answer» C. Zero | |
| 552. |
Which of the following is a D for the operation of the lamp? |
| A. | mercury vapor lamp |
| B. | arc lamp |
| C. | fluorescent lamp |
| D. | sodium ware lamp |
| Answer» C. fluorescent lamp | |
| 553. |
The motor is installed in the cooler pump? |
| A. | stepper |
| B. | shaded pole |
| C. | both A and B |
| D. | Repulsion induction motor is |
| Answer» C. both A and B | |
| 554. |
What is used to keep machines cool? |
| A. | helium gas |
| B. | hydrogen gas |
| C. | nitrogen gas |
| D. | Carbon dioxide |
| Answer» C. nitrogen gas | |
| 555. |
What is the terminal plate of a three frame motor made of? |
| A. | backlight |
| B. | mica |
| C. | Rubber |
| D. | ebonite |
| Answer» B. mica | |
| 556. |
Is a generator used for battery charge? |
| A. | Differential Compound Generator |
| B. | shunt generator |
| C. | Cumulative Compound Generator |
| D. | series generator |
| Answer» C. Cumulative Compound Generator | |
| 557. |
The highest value of current or voltage in a cycle is called? |
| A. | average value |
| B. | Frequency |
| C. | R. M / s. Values |
| D. | Amplitude |
| Answer» E. | |
| 558. |
The motor used in a domestic refrigerator is? |
| A. | capacitor motor |
| B. | DC Shunt Motor |
| C. | DC. range motor |
| D. | universal motor |
| Answer» B. DC Shunt Motor | |
| 559. |
In which motor there is minimum increase in armature current with same increase in torque? |
| A. | range motor |
| B. | shunt motor |
| C. | Cumulative Compound Motor |
| D. | all of the above |
| Answer» B. shunt motor | |
| 560. |
Most of the three phase supply connections are? |
| A. | star and delta |
| B. | in series and parallel order |
| C. | in delta or parallel |
| D. | in category and star |
| Answer» B. in series and parallel order | |
| 561. |
If the armature current induced |
| A. | magnetic |
| B. | paramagnetic |
| C. | cross magnetization |
| D. | none of these |
| Answer» D. none of these | |
| 562. |
Which transformer converts high voltage to low voltage? |
| A. | Step down |
| B. | step up |
| C. | both A and B |
| D. | none of these |
| Answer» C. both A and B | |
| 563. |
Is wiring safe from fire and chemical substances? |
| A. | casing-capping wiring |
| B. | concealed wiring |
| C. | conduit wiring |
| D. | batten wiring |
| Answer» C. conduit wiring | |
| 564. |
Does hysteresis depend on loss? |
| A. | at frequency |
| B. | at the temperature of the substance |
| C. | on the volume of matter |
| D. | all of the above |
| Answer» C. on the volume of matter | |
| 565. |
Description of lead accumulator cell |
| A. | on the size of the electrodes |
| B. | on the nature of electrodes |
| C. | on the arrival of the cell |
| D. | none of these |
| Answer» C. on the arrival of the cell | |
| 566. |
Angle of torque on increasing load on synchronous motor? |
| A. | grows |
| B. | decreases |
| C. | remains unchanged |
| D. | none of these |
| Answer» B. decreases | |
| 567. |
What is the function of conservator in transformer? |
| A. | improve power factor |
| B. | moisture retention |
| C. | preventing air from entering the oil |
| D. | adjusting the expansion and contraction of oil |
| Answer» E. | |
| 568. |
Silica gel is used for? |
| A. | to absorb moisture |
| B. | oil to cool |
| C. | To control voltage of transformer |
| D. | all of the above |
| Answer» B. oil to cool | |
| 569. |
Rotor speed in alternator? |
| A. | depends on the number of excitatory poles |
| B. | is synchronous |
| C. | depends on the load current |
| D. | all of the above |
| Answer» C. depends on the load current | |
| 570. |
What is the main feature of a constant voltage source? |
| A. | low internal resistance |
| B. | high output resistance |
| C. | Steady Current Characteristics |
| D. | low efficiency |
| Answer» B. high output resistance | |
| 571. |
Which of the following hitting method has the highest power factor? |
| A. | resistance heating |
| B. | induction heating |
| C. | arc heating |
| D. | dielectric heating |
| Answer» B. induction heating | |
| 572. |
Those substances whose magnetism is less than one unit are called? |
| A. | diamagnetic material |
| B. | paramagnetic material |
| C. | double polarity |
| D. | ferromagnetic material |
| Answer» B. paramagnetic material | |
| 573. |
Those substances whose magnetic flux intersects, then |
| A. | joule's law |
| B. | weber's law |
| C. | coulomb's law |
| D. | Faraday's law |
| Answer» E. | |
| 574. |
What is the unit of permeability? |
| A. | barber / meter |
| B. | newton / meter |
| C. | farad / meter |
| D. | farad newton-meter |
| Answer» D. farad newton-meter | |
| 575. |
In which of the following devices the heating effect of electricity is used? |
| A. | transformer |
| B. | generator |
| C. | electric motor |
| D. | electric furnace |
| Answer» E. | |
| 576. |
What is used in ampere meter circuit? |
| A. | in rank order |
| B. | in parallel |
| C. | in hierarchical order |
| D. | all of the above |
| Answer» B. in parallel | |
| 577. |
What is the relay in refrigerators? |
| A. | magnetic type |
| B. | By simple switch |
| C. | non-magnetic |
| D. | all of the above |
| Answer» B. By simple switch | |
| 578. |
What is the main part of electron gun? |
| A. | of cathode ray isoloscope |
| B. | of transistor tester |
| C. | of single generator |
| D. | all of the above |
| Answer» B. of transistor tester | |
| 579. |
Capacitors are used to increase the power factor? |
| A. | parallel to the supply |
| B. | By putting the resistance of the supply |
| C. | in the supply chain |
| D. | none of these |
| Answer» B. By putting the resistance of the supply | |
| 580. |
The resistance of tungsten with increase in temperature? |
| A. | decreases |
| B. | grows |
| C. | no change |
| D. | all these |
| Answer» C. no change | |
| 581. |
Will MCB be used for lighting circuit? |
| A. | green knob |
| B. | red knob |
| C. | blue knob |
| D. | black knob |
| Answer» B. red knob | |
| 582. |
The motor used in the high capacity motor generator set is often? |
| A. | cage type induction motor |
| B. | synchronous motor |
| C. | DC Compounder Motor |
| D. | none of the above |
| Answer» C. DC Compounder Motor | |
| 583. |
What is Gilbert unit? |
| A. | magnetization carrier |
| B. | electromotive force |
| C. | of conductivity |
| D. | electronegative |
| Answer» B. electromotive force | |
| 584. |
How is solder wire made? |
| A. | land and tin |
| B. | zinc and copper |
| C. | of copper and lead |
| D. | none of these |
| Answer» B. zinc and copper | |
| 585. |
Are fan boxes installed in roofs? |
| A. | Casing - In capping wiring |
| B. | in cleat wiring |
| C. | in conduit wiring |
| D. | in wiring |
| Answer» D. in wiring | |
| 586. |
प्रोटॉन में होता है ? |
| A. | ऋणात्मक आवेश |
| B. | आवेश रहित |
| C. | धनात्मक आवेश |
| D. | उपर्युक्त सभी |
| Answer» D. उपर्युक्त सभी | |
| 587. |
शुद्ध कैपेसिटिव परिपथ का पावर फैक्टर होता है ? |
| A. | यूनिटी |
| B. | शून्य लीडिंग |
| C. | शून्य लैगिंग |
| D. | उपर्युक्त सभी |
| Answer» D. उपर्युक्त सभी | |
| 588. |
पोल वाइंडिंग जो आर्मेचर के सिरीज में जुडी रहती है, कहलाती है ? |
| A. | शंट फील्ड वाइंडिंग |
| B. | एक्जीलरी वाइंडिंग |
| C. | डैम्पिंग वाइंडिंग |
| D. | इन्टरपोल वाइंडिंग |
| Answer» E. | |
| 589. |
स्ट्रेन्डिड तार लगाए जाते हैं ? |
| A. | आवेर हैड लाइन में |
| B. | चौक की बाइंडिंग में |
| C. | बाइंडिंग में |
| D. | घरों में वायरिंग में |
| Answer» B. चौक की बाइंडिंग में | |
| 590. |
अस्थायी कार्यों हेतु वायरिंग का चयन करेंगे ? |
| A. | बैटन वायरिंग |
| B. | P.V.Cकंड्यूट वायरिंग |
| C. | क्लीट वायरिंग |
| D. | उपर्युक्त सभी |
| Answer» D. उपर्युक्त सभी | |
| 591. |
बिजली की लगी आग पर डालना चाहिए ? |
| A. | तेज़ाब |
| B. | सूखी रेत |
| C. | पानी |
| D. | उपर्युक्त में से कोई नहीं |
| Answer» C. पानी | |
| 592. |
गंधकके अम्ल में पानी मिलाने पर ? |
| A. | अम्ल का रंग परिवर्तित हो जाता है |
| B. | अत्यधिक ऊष्मा उत्पन्न होती है |
| C. | जल उबलने लगता है |
| D. | अम्ल क्षार में परिवर्तित हो जाता है |
| Answer» D. अम्ल क्षार में परिवर्तित हो जाता है | |
| 593. |
चालक का वह गुण जो धारा के बढ़ने में सहायक होता है कहलाता है ? |
| A. | प्रवेश्यता |
| B. | प्रतिबाधा |
| C. | चालकता |
| D. | उपर्युक्त |
| Answer» D. उपर्युक्त | |
| 594. |
द्वितीयक सैल द्वारा एकत्रित ऊर्जा कहलाती है ? |
| A. | विद्युत ऊर्जा |
| B. | रासायनिक ऊर्जा |
| C. | ऊष्मा ऊर्जा |
| D. | प्रकाश ऊर्जा |
| Answer» C. ऊष्मा ऊर्जा | |
| 595. |
इलेक्ट्रॉन में होता है ? |
| A. | ऋणात्मक आवेश |
| B. | धनात्मक आवेश |
| C. | आवेश रहित |
| D. | उपर्युक्त सभी |
| Answer» B. धनात्मक आवेश | |
| 596. |
रिलेक्टेन्स की इकाई है ? |
| A. | एम्पियर टर्न |
| B. | एम्पियर टर्न।/वेबर |
| C. | वेबर |
| D. | इनमें से कोई नहीं |
| Answer» E. | |
| 597. |
हिस्टेरिसिस लूप का क्षेत्रफल पदार्थ के किस गन की माप है ? |
| A. | चुम्बकशीलता |
| B. | विद्युतशीलता |
| C. | प्रतिचक्र में व्यय ऊर्जा |
| D. | चुंबकीय फ्लक्स |
| Answer» D. चुंबकीय फ्लक्स | |
| 598. |
टंगस्टन तन्तु लैम्प की निर्गत निर्भर करती है ? |
| A. | लैम्प के आकर पर कांच |
| B. | तन्तु के ताप पर |
| C. | बल्ब के आकर पर |
| D. | उपर्युक्त सभी पर |
| Answer» C. बल्ब के आकर पर | |
| 599. |
ट्रांसमिशन लाइन, डिस्ट्रीब्यूशन लाइन और कंडेंसर में दो चालकों के मध्य इंसुलेटर की तरह प्रयोग में लेते हैं ? |
| A. | शु क वायु |
| B. | स्लेट |
| C. | बैकेलाइट |
| D. | माइका नाइट |
| Answer» C. बैकेलाइट | |
| 600. |
फ्यूज वायर बनाया जाता है ? |
| A. | लैड व टिन का |
| B. | ताँबा व टिन का |
| C. | ताँबा व जिंक का |
| D. | जस्ता व टिन का |
| Answer» C. ताँबा व जिंक का | |