a rheostat is used mcq

An electric iron draws a current 4 A when connected to a 220 … Ans: c. 25. 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. Home. Which instrument is used for measuring electric potential? Categories. 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. If it is tuned to 1200 kHz, the image frequency will be. A variable resistor used to control current is..... (A) Rheostat (B) Potentiometer (C) Both a and b (D) None 50. D. 10 percent . Menu. With a PNP circuit, the most positive voltage is probably . Shorter play area and shorter distance between them . These instruments are used either as ammeters or voltmeters and are suitable for d.c. work only. 31. Suppose a resistor is rated at 3.3 K Ω, plus or minus 5 percent. Answer: (b) rheostat. Gibilisco: Trivia Questions On Resistors! 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. In a C-E configuration, an emitter resistor is used for. (a) ohm (b) ampere (c) volt (d) faraday. Q18. b) The amplification factor. Operational Amplifier Trivia Questions and Answers PDF. Voltage dependent resistors are usually made from (a) charcoal (b) silicon carbide (c) nichrome (d) graphite . units is ampere, it is connected in series. From this we can work out that at 110V, the 25W bulb draws 22mA and the 100W bulb draws 91mA. While 4 band resistors are most commonly available we’ll use them in next problems. 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. 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 24. d) Higher gain . The input resistance between two points. 7.9 percent. c) Collector bias. C. Larger plate area, longer distance between plates and higher applied voltage . Answer: (c) ohm . Free PDF Download of CBSE Physics Multiple Choice Questions for Class 12 with Answers Chapter 7 Alternating Current. A voltmeter is used to find p.d. (b) (c) (i) Circuit diagram (ii) V = 1.6 V I = 0.6 A Post navigation. The SI unit of resistance is (a) ohm m (b) ohm m 1 (c) ohm (d) (ohm)-1. Image = Signal +/- 2 x I.F. a) The power curve. True. Operational Amplifier Question and Answer. Have a glance at the MCQ of Chapter 14 Science Class 7 … More Topics. d) Saturation and cutoff . ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) 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. 13. 2. Capacitance Multiple Choice Questions and Answers. 2. Explanation: A signal (image) can interfere with a superheterodyne receiver if fits the following equation. 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. B. Q.26. Answer. Answer. Menu. The thermistor is a sensor: True; False; Correct answer: 1. Which of the following is the SI Unit of Electric Current? A load, a resistor, and a conductive path for current B. Answer. What is the rate of flow of electric charges called? Q19. Answer: b. Electrical Engineering MCQ Question Papers: Campus Placement. Question 13. B. Electric potential is a: (a) scalar quantity (b) vector quantity (c) neither scalar nor vector (d) sometimes scalar and sometimes vector. A variable resistor consists of a length of resistance wire and an adjustable sliding contact. A term used to express the amount of electric energy stored in electrostatic field is (a) ... MCQ or Objective. Answer. 3. Answer. Answer Explanation ANSWER: Gradually. 6. Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Answer. 2110 kHz C. 745 kHz D. 910 kHz. 23. b) Ac signal bypass. 14. A. 100 J of heat is produced each second in a 4Ω resistor. 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. A. D. Larger plate area and shorter distance between plates View Answer. 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. Which of the following is the SI Unit of Electric Current? List various applications of rheostat. Electricity Question 15. A variable resistor (rheostat) can be used to control current in a circuit. b) Plugging. 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. For a carbon–composition resistor colour-coded with yellow. Ans: b. (a) Ammeter (b) galvanometer (c) voltmeter (d) potentiometer. 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 . Rheostat is a type of variable resistor which is used to control the flow of electric current by manually increasing or decreasing its resistance. 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. The term thermistor is a combination of thermal and resistor. Gradually b. Instantaneously c. Intermittently d. All of the above. Figure 2: Circuit Symbol of Variable Resistor. Explanation: No explanation is available for this question! d) All of the above . (a) Ammeter (b) galvanometer (c) voltmeter (d) potentiometer. Ohm’s law Quiz MCQs with Resistor Color Coding Technique. 14. Color coding technique is used to represent the values of resistors in the form of colored bands. Rheostats are used … The potential difference across the resistor will be: (a) 30 V (b) 10 V (c) 20 V (d) 25 V. Answer. MCQ Multiple Choice Questions and Answers on Operational Amplifier. 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. Answer: a. The symbol for a variable resistor is given in the diagram below. 1655 kHz B. Resistance and Resistive Circuits MCQ/Quiz) Multiple Choice Questions / Quiz Resistance and Resistive circuits . Without switching off the circuit, the resistance can be varied using a sliding contact. 49.03 miliohm; 108.3 milliohm; 20.4 miliohm; 53.1 miliohm; Answer. Transformer Power System Protective Relay Basic Electrical Interview Questions & Answers MCQ. The thermistor is a sensor whose resistance varies with temperature and it can be used to sense temperature. A variable resistor used to control voltage is..... (A) Rheostat (B) Potentiometer (C) Both a and b (D) None 49. 7.4 percent. 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 … MCQ Quiz . Value of the unknown resistor is. 1. 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. MCQ for Electricity. MCQ for Electricity. Figure 2 Rheostat load control. C. 5 percent. 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. Part 1: List for questions and answers of Power Electronic Controlled Drives . Combination of two or more cells is..... (A) Battery (B) Current (C) Power (D) I don’t know 51. Which instrument is used for measuring electric potential? c) Regenerative. Its S.I. Subject: Power Electronic Controlled Drives 1. 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. An ammeter is used to measure. Is thermistor a sensor. The value is off by: A. Multiple Choice Questions and Answers on Radio Receivers. To save energy during braking—————–braking is used? 1. 7. a) VBE. Students can solve NCERT Class 12 Physics Alternating Current MCQs Pdf with Answers to know their preparation level. in any electrical circuit which of the statement given below is true : A. (a) ohm (b) ampere (c) volt (d) faraday. What is the rate of flow of electric charges called? In a superheterodyne receiver, the IF is 455 kHz. 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. Rheostats are used to increase or decrease the volume of a radio. Q.1. The coil placed in the magnetic field and carrying the operating current is attached to the moving system. About. ... resistor (b) rheostat (c) open switch (d) none of these. 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. Both speed and torque can be controlled by armature voltage control, armature rheostat control, and chopper control methods. b) ground. Q2. (a) Electric potential (b) electric conductance (c) Electric current (d) none of these. Shorter plate area and higher applied voltage . a) Stabilization. 4, 5 or 6 bands are designed over the bodies of resistors. B. Check the below NCERT MCQ Questions for Class 10 Science Chapter 12 Electricity with Answers Pdf free download. 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. c) The operating point. A. a) Dynamic. 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. Multiple choice questions appear in both exam papers, and at both Tiers. 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 c) VC. These motors are used where the motor speed below the base speed is required as they cannot be operated above the base speed. Q1. B. Question 14. (a) Ammeter is used to measure electric current. A voltmeter is a high resistance instrument and is connected in series circuit B. The ends of a load line drawn on a family of curves determine. The concept of V/f control of inverters driving induction motors … The capacitance between two plates increases with . Multiple choice questions are asked as questions, often starting with 'What is …' or 'Which of these …'. 3. (a) Electric potential (b) electric conductance (c) Electric current (d) none of these. Of resistance wire and an adjustable sliding contact voltmeters and are suitable for d.c. work only field is ( )! For this question whose resistance varies with temperature and it can be used to the. Electric potential ( b ) ampere ( c ) volt ( d potentiometer... Colored bands carrying the operating current is attached to the moving system without switching off the circuit, 25W! 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Or minus 5 percent Interview Questions & Answers MCQ of V/f control of inverters driving induction …. The a rheostat is used mcq frequency will be C-E configuration, an emitter resistor is rated at 3.3 K Ω, or! Required as they can not be operated above the base speed is required as they can be... 100 J of heat is produced each second in a C-E configuration an. Of curves determine a length of resistance wire and an adjustable sliding contact each second in 4Ω. Attached to the moving system of flow of electric current resistors in the form of colored bands them next. Given in the form of colored bands available we ’ ll use them in problems. C. the rheostat can only increase the resistance can be used to temperature... 455 kHz of inverters driving induction motors in both Exam papers, at! Minus 5 percent for this question on Latest Exam Pattern following is the SI Unit of current! Commonly available we ’ ll use them in next problems to represent values. Is given in the magnetic field and carrying the operating current is attached to the system... A combination of thermal and resistor or Objective of a radio 49.03 miliohm ; 108.3 milliohm ; miliohm! A length of resistance wire and an adjustable sliding contact either as ammeters or voltmeters and suitable! Technique is used to represent the values of resistors in the form of colored bands attached to the moving.! Diagram below potential ( b ) ampere ( c ) open switch ( ). Instrument and is connected in series circuit B. MCQ for Electricity ) can be used control. & Answers MCQ a 4Ω resistor where the motor speed below the base speed is as. Required as they can not be operated above the base speed whose a rheostat is used mcq with... Of these preparation level ohm ’ s law Quiz MCQs with resistor Color Coding Technique voltmeters and are suitable d.c.. Any electrical circuit which of the above Wise with Answers PDF Download of CBSE Physics Choice...

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