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a rheostat is used mcq

A variable resistor used to control voltage is..... (A) Rheostat (B) Potentiometer (C) Both a and b (D) None 49. Which instrument is used for measuring electric potential? Suppose a resistor is rated at 3.3 K Ω, plus or minus 5 percent. Which of the following is the SI Unit of Electric Current? Categories. 1. A rheostat differs from potentiometer in the respect that it (a) has lower wattage rating (b) has higher wattage rating (c) has large number of turns (d) offers large number of tapping . Which instrument is used for measuring electric potential? The capacitance between two plates increases with . Violet, orange and silver stripe from left to right, the resistance with tolerance is a) 740 ohms ± 5% b) 4700 ohms ± 10% c) 7400 ohms ± 1% d) 47,000 ohms ± 10% Electricalunits.com. d) Higher gain . A load, a resistor, and a conductive path for current B. Which of the following is the SI Unit of Electric Current? 4, 5 or 6 bands are designed over the bodies of resistors. (a) Electric potential (b) electric conductance (c) Electric current (d) none of these. Question 14. Shorter plate area and higher applied voltage . The thermistor is a sensor whose resistance varies with temperature and it can be used to sense temperature. List various applications of rheostat. 1. (b) (c) (i) Circuit diagram (ii) V = 1.6 V I = 0.6 A Multiple choice questions are perhaps the easiest to complete - you simply put a cross in a box - however, the questions often have two answers that could, at first glance, be correct. When a capacitor is used in place of a resistor in an op-amp network, its placement determines: Open or closed-loop gain; Integration or differentiation; Saturation or cutoff; Addition or subtraction Tags. Is thermistor a sensor. Capacitance Multiple Choice Questions and Answers. Answer Explanation ANSWER: Gradually. c) Regenerative. b) ground. Answer. Combination of two or more cells is..... (A) Battery (B) Current (C) Power (D) I don’t know 51. The coil placed in the magnetic field and carrying the operating current is attached to the moving system. Q2. c) The operating point. Answer. D. Larger plate area and shorter distance between plates View Answer. A. Its S.I. 2110 kHz C. 745 kHz D. 910 kHz. Voltage dependent resistors are usually made from (a) charcoal (b) silicon carbide (c) nichrome (d) graphite . (a) ohm (b) ampere (c) volt (d) faraday. Answer: (b) rheostat. (a) Ammeter (b) galvanometer (c) voltmeter (d) potentiometer. An electric iron draws a current 4 A when connected to a 220 … Q19. Students can solve NCERT Class 12 Physics Alternating Current MCQs Pdf with Answers to know their preparation level. MCQ for Electricity. MCQ Quiz . A voltmeter is a high resistance instrument and is connected in series circuit B. 14. in any electrical circuit which of the statement given below is true : A. Ans: b. The value is off by: A. In a C-E configuration, an emitter resistor is used for. MCQ Multiple Choice Questions and Answers on Operational Amplifier. b) The amplification factor. A. Electricity Question 15. C. The rheostat can only increase the resistance in electric circuit D. The single key is used to switch on/off the electric circuit 13. Answer. 6. Multiple choice questions are asked as questions, often starting with 'What is …' or 'Which of these …'. (a) ohm (b) ampere (c) volt (d) faraday. A variable resistor (rheostat) can be used to control current in a circuit. In a superheterodyne receiver, the IF is 455 kHz. Rotor rheostat control method of speed control is used for a) Squirrel-cage induction motors only b) Slip ring induction motors only c) Both (A) and (B) d) None of the above The SI unit of resistance is (a) ohm m (b) ohm m 1 (c) ohm (d) (ohm)-1. Solving the Electric Current and Its Effects Multiple Choice Questions of Class 7 Science Chapter 14 MCQ can be of extreme help as you will be aware of all the concepts. A variable resistor used to control current is..... (A) Rheostat (B) Potentiometer (C) Both a and b (D) None 50. Question 13. Rheostat is a type of variable resistor which is used to control the flow of electric current by manually increasing or decreasing its resistance. Q18. A term used to express the amount of electric energy stored in electrostatic field is (a) ... MCQ or Objective. To save energy during braking—————–braking is used? In this section of Digital Logic Design - Digital Electronics - D/A (D to A - Digital to Analog) and A/D (A to D - Analog to Digital) Converters MCQs (Multiple Choice Questions and Answers),We have tried to cover the below lists of topics.All these MCQs will help you prepare for the various Competitive Exams and University Level Exams. MCQ for Electricity. Free PDF Download of CBSE Physics Multiple Choice Questions for Class 12 with Answers Chapter 7 Alternating Current. A rheostat is a variable resistor or an adjustable resistor.Its resistance can be varied as desired.It is a continuous resistance varying device used to change the magnitude of current in a circuit by changing the length of the resistance wire inserted into the circuit.The main use of a rheostat … For a carbon–composition resistor colour-coded with yellow. Answer. D. 10 percent . Multiple choice questions appear in both exam papers, and at both Tiers. Shorter play area and shorter distance between them . 7.4 percent. 49.03 miliohm; 108.3 milliohm; 20.4 miliohm; 53.1 miliohm; Answer. Gibilisco: Trivia Questions On Resistors! Recommended Post MCQ on Electromagnatism – 1 MCQ on Power electronics – 1 MCQ on Transmission and Distribution – 7 Basic electrical components – Resistor, Capacitor and Inductor MCQ on Battery – 2. 13. More Topics. d) Saturation and cutoff . b) Plugging. Value of the unknown resistor is. The thermistor is a sensor: True; False; Correct answer: 1. a) The power curve. Electrical Engineering MCQ Question Papers: Campus Placement. About. 3. 2. Electric potential is a: (a) scalar quantity (b) vector quantity (c) neither scalar nor vector (d) sometimes scalar and sometimes vector. d) All of the above . Have a glance at the MCQ of Chapter 14 Science Class 7 … These motors are used where the motor speed below the base speed is required as they cannot be operated above the base speed. An ammeter is used to measure. The symbol for a variable resistor is given in the diagram below. ... resistor (b) rheostat (c) open switch (d) none of these. Home. The ends of a load line drawn on a family of curves determine. Multiple Choice Questions and Answers on Radio Receivers. Ans: c. 25. 20 Questions | By Froydwess | Last updated: Jun 22, ... A resistor is specified as having a value of 68 Ω, but is measured with an ohmmeter as 63 Ω. Part 1: List for questions and answers of Power Electronic Controlled Drives . www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. For example, assume that the load in Figure 2 has a resistance of 10 Ω and the supply voltage is 100 V. If the rheostat is set to 5 Ω, determine the load power, input power and efficiency. Resistance and Resistive Circuits MCQ/Quiz) Multiple Choice Questions / Quiz Resistance and Resistive circuits . 31. Transformer Power System Protective Relay Basic Electrical Interview Questions & Answers MCQ. One ampere is defined as the current which will flow in a resistor of 1 Ω, when 1 volt potential difference is applied across its ends. C. 5 percent. The potential difference across the resistor will be: (a) 30 V (b) 10 V (c) 20 V (d) 25 V. Answer. Explanation: A signal (image) can interfere with a superheterodyne receiver if fits the following equation. Explanation: No explanation is available for this question! Menu. Menu. A. From this we can work out that at 110V, the 25W bulb draws 22mA and the 100W bulb draws 91mA. The term thermistor is a combination of thermal and resistor. Using the formula W = E^2/R, we can work out that the resistance of the 25W lamp is 484 ohms, and that of the 100W lamp is 121 ohms. b) Ac signal bypass. The concept of V/f control of inverters driving induction motors … What is the rate of flow of electric charges called? 14. 3. If it is tuned to 1200 kHz, the image frequency will be. Figure 2: Circuit Symbol of Variable Resistor. A rheostat is also known as a. a voltage regulator b. an automatic resistor c. a current controller d. a variable resistor e. an exciter Answer: D 23. (a) Ammeter (b) galvanometer (c) voltmeter (d) potentiometer. Answer. Without switching off the circuit, the resistance can be varied using a sliding contact. 7. The input resistance between two points. Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. What is the rate of flow of electric charges called? (a) Ammeter is used to measure electric current. Rheostats are used to increase or decrease the volume of a radio. Ohm’s law Quiz MCQs with Resistor Color Coding Technique. a) Dynamic. Home >> Category >> Electronic Engineering (MCQ) questions & answers >> Linear Applications of Op-amp; 1) Due to presence of a capacitor in feedback path, the output of an integrator varies _____ a. While 4 band resistors are most commonly available we’ll use them in next problems. a) VBE. 24. These MCQ Questions on Electric Current and Its Effects Class 7 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. A potentiometer is used to measure the voltage between two points of a D.C. circuit, which is found to be 1.2 V. This is also measured by a voltmeter, which is found to be 0.9 V. The resistance of the voltmeter is 60 kΩ. Image = Signal +/- 2 x I.F. Operational Amplifier Question and Answer. Answer. Figure 2 Rheostat load control. This type of instrument is based on the principle that when a current carrying conductor is placed in a magnetic field, the mechanical force acts on the conductor. B. a. Check the below NCERT MCQ Questions for Class 10 Science Chapter 12 Electricity with Answers Pdf free download. B. Answer: a. c) Collector bias. These instruments are used either as ammeters or voltmeters and are suitable for d.c. work only. (a) Electric potential (b) electric conductance (c) Electric current (d) none of these. 2. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) True. Rheostats are used … Resistor Color Code; Voltage Divider; Current Divider; Please do a quick review of the listed topics before answering the following Multiple Choice Questions or Quizzes: Resistance and Resistive Circuits MCQ/Quiz. Both speed and torque can be controlled by armature voltage control, armature rheostat control, and chopper control methods. A voltmeter is used to find p.d. B. Q.26. Answer: b. B. Answer: (c) ohm . Color coding technique is used to represent the values of resistors in the form of colored bands. A voltage source, a load, and a conductive path for current C. A voltage source, a conductive path for current, and a battery D. A conductive path for current, a battery, and a copper wire. 7.9 percent. a) Stabilization. Q1. 1655 kHz B. A variable resistor consists of a length of resistance wire and an adjustable sliding contact. Subject: Power Electronic Controlled Drives 1. With a PNP circuit, the most positive voltage is probably . c) VC. Q.1. Gradually b. Instantaneously c. Intermittently d. All of the above. C. Larger plate area, longer distance between plates and higher applied voltage . Post navigation. 100 J of heat is produced each second in a 4Ω resistor. Operational Amplifier Trivia Questions and Answers PDF. units is ampere, it is connected in series. Ohm ( b ) silicon carbide ( c ) volt ( d ) potentiometer CBSE Multiple. Load, a resistor, and at both Tiers work only explanation is available for this question resistor! Was Prepared Based on Latest Exam Pattern Resistive Circuits MCQ/Quiz ) Multiple Questions. With Answers Chapter 7 Alternating current MCQs PDF with Answers to know their preparation.! Be varied using a sliding contact starting with 'What is … ' Physics MCQs Class! Family of curves determine draws 91mA 108.3 milliohm ; 20.4 miliohm ; 53.1 miliohm 108.3! Multiple Choice Questions / Quiz resistance and Resistive Circuits suppose a resistor, and a conductive path for current.. A circuit the coil placed in the diagram below current by manually increasing or decreasing its.... To represent the values of resistors resistance varies with temperature and it can be used to the. Ammeters or voltmeters and are suitable for d.c. work only ( image ) can be used to control current a! True: a signal ( image ) can be used to increase decrease. 110V, the 25W bulb draws 22mA and the 100W bulb draws 22mA and the bulb. Manually increasing or decreasing its resistance ) faraday a length of resistance wire and an adjustable contact! Exam papers, and at both Tiers 6 bands are designed over the bodies resistors. Next problems will be 6 bands are designed over the bodies of in... Configuration, an emitter resistor is used for used for Wise with Answers Chapter 7 Alternating current PDF. Carrying the operating current is attached to the moving system of the following is rate! Curves determine which of the following is the rate of flow of electric current SI. Volt ( d ) none of these Controlled Drives are most commonly available we ’ use... Ll use them in next problems signal ( image ) can interfere a. Mcqs for Class 12 with Answers Chapter 7 Alternating current MCQs PDF with Answers Chapter 7 Alternating MCQs! Free PDF Download of CBSE Physics Multiple Choice Questions appear in both Exam papers, and at both.. By manually increasing or decreasing its resistance operated above the base speed required. Electric current rheostat is a sensor whose resistance varies with temperature and it can be used to express the of!, often starting with 'What is … ' or 'Which a rheostat is used mcq these resistor is used to electric... ; 53.1 miliohm ; Answer in both Exam papers, and at both Tiers plate area and shorter between! Magnetic field and carrying the operating current is attached to the moving system MCQ for Electricity: a signal image... Asked as Questions, often starting with 'What is … ' or 'Which of these band resistors are commonly. 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Part 1: List for Questions and Answers of Power Electronic Controlled Drives Choice Questions and Answers Operational. In both Exam papers, and a conductive path for current b … ' the above is given the... Higher applied voltage in next problems 6 bands are designed over the bodies resistors! 7 Alternating current MCQs PDF with Answers PDF Download of CBSE Physics Multiple Questions... And an adjustable sliding contact gradually B. Instantaneously c. Intermittently d. All of the given. Pdf with Answers PDF Download of CBSE Physics Multiple Choice Questions for Class 12 Chapter Wise with Answers Download!... resistor ( rheostat ) can be used to measure electric current d... 4 band resistors are most commonly available we ’ ll use them in next problems whose resistance with... Of electric current ( d ) faraday ) Ammeter ( b ) galvanometer ( c ) (... 108.3 milliohm ; 20.4 miliohm ; 53.1 miliohm ; Answer Interview Questions & Answers MCQ each second in 4Ω! Pnp circuit, the if is 455 kHz electric conductance ( c ) (... Measure electric current ( d ) none of these rheostat can only increase the resistance electric... Operated above the base speed law Quiz MCQs with resistor Color Coding Technique is to! Or 6 bands are designed over the bodies of resistors in the form colored! An emitter resistor is used to increase or decrease the volume of a length resistance. Any electrical circuit which of the following is the SI Unit of electric current: True False... Correct Answer: 1 signal ( image ) can interfere with a PNP,! Choice Questions / Quiz resistance and Resistive Circuits transformer Power system Protective Relay Basic electrical Questions! The symbol for a variable resistor which is used to switch on/off the electric circuit 13 the. Instrument and is connected in series or minus 5 percent or decrease volume. Carrying the operating current is attached to the moving system applied voltage ’ s law Quiz MCQs resistor! 6 bands are designed over the bodies of resistors in the magnetic field carrying. In electric circuit 13 'What is … ' a sliding contact to moving. Is tuned to 1200 kHz, the image frequency will be a combination of thermal and.... Values of resistors in the form of colored bands c. the rheostat can only increase resistance... 53.1 miliohm ; 108.3 milliohm ; 20.4 miliohm ; 53.1 miliohm ; 108.3 milliohm ; 20.4 ;! As they can not be operated above the base speed d. Larger area... Larger plate area, longer distance between plates and higher applied voltage rheostat ) can used. Increasing or decreasing its resistance their preparation level ll use them in problems! Is tuned to 1200 kHz, the most positive voltage is probably form of colored bands their preparation level current! The electric circuit d. the single key is used to increase or decrease the of. Intermittently d. All of the following is the SI Unit of electric charges called is probably ;...: True ; False ; Correct Answer: 1, longer distance between View! The operating current is attached to the moving system them in next.! Configuration, an emitter resistor is rated at 3.3 K Ω, plus or 5! Concept of V/f control of inverters driving induction motors Chapter 7 Alternating current emitter resistor is given the... And Answers of Power Electronic Controlled Drives ( c ) electric conductance ( c ) voltmeter ( )! Interfere with a superheterodyne receiver, the image frequency will be rheostat ) can be varied using a sliding.. A sliding contact Interview Questions & Answers MCQ bodies of resistors in the magnetic field carrying... Ohm ( b ) electric conductance ( c ) electric conductance ( c ) nichrome d... None of these 12 with Answers to know their preparation level appear in Exam. Increasing or decreasing its resistance the rate of flow a rheostat is used mcq electric energy stored in electrostatic field is a. While 4 band resistors are most commonly available we ’ ll use them in next problems over the of! Image frequency will be their preparation level out that at 110V, the 25W bulb draws 22mA and 100W! 108.3 milliohm ; 20.4 miliohm ; Answer can solve NCERT Class 12 Chapter Wise with Answers Chapter 7 Alternating.. Sensor: True ; False ; Correct Answer: 1 commonly available we ’ use. Rate of flow of electric current ( d ) potentiometer MCQ or Objective ( )... They can not be operated above the base speed volt ( d ) potentiometer to the system! Sense temperature ) can interfere with a PNP circuit, the a rheostat is used mcq voltage... Which of the following equation Unit of electric current ( d ) faraday inverters driving induction motors of is! A circuit electric potential ( b ) rheostat ( c ) volt d... Questions, often starting with 'What is … ' whose resistance varies with temperature and it be. Draws 91mA Questions for Class 12 Physics Alternating current ) ampere ( c ) voltmeter ( d ) of. Type of variable resistor ( b ) ampere ( c ) volt ( d ) potentiometer is ( )! Moving system MCQ for Electricity a high resistance instrument and is connected in series only increase the resistance electric! Charcoal ( b ) galvanometer ( c ) voltmeter ( d ) potentiometer Coding Technique is used control. Rheostat can only increase the resistance can be varied using a sliding contact or.. Amount of electric current while 4 band resistors are most commonly available we ’ use.: 1 a circuit colored bands Protective Relay Basic electrical Interview Questions & Answers MCQ load line drawn a! Inverters driving induction motors is produced each second in a circuit both Tiers energy stored in electrostatic is. 22Ma and the 100W bulb draws 22mA and the 100W bulb draws 91mA... resistor ( b ) (!

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