20. 11. PMMC type Moving iron type Dynamometer type Hot wire type, Electrostatic type, Induction type. Explanation are given for understanding. 15. 23. m 2. cm. Free PDF download of Important Questions with solutions for CBSE Class 11 Physics Chapter 2 - Units and Measurement prepared by expert Physics teachers from latest edition of CBSE(NCERT) books. Its significant advancement in recent years has led to the technology being adopted commercially in several areas including psychacoustic bass enhancement. Free download in PDF Unit and Measurement Objective Type Questions & Answers for competitive exams. 2. 12. Download NCERT Solutions Class 11 Physics Chapter 2 PDF:-Download Here 1. What are the various devices in IEEE 488 Bus? 3. 21. (i)Errors due to stray magnetic fields. The oscilloscope which is not only meant for viewing the waveform , but. 7. (ii)Hysterisis loss. 13. View Solution play_arrow; question_answer2) Various devices in IEEE 488 Bus are (i)Talkers. Questions Sample Papers Notes ... done Units and Measurements Conceptual Problems Total Question - 50 question_answer1) What is the necessity of selecting some units as fundamental units? Which one of the following represents the correct dimensions of the coefficient of viscosity? A student measuring the diameter of a pencil of circular cross-section with the help of a vernier State the applications of PMMC instruments. The velocity v of a particle at time t is given by where a, b and c are constants, The dimensions of a, b and c are respectively: Answer. While this method does represent random noise well, it does not always capture all sinusoidal signals. 8. Chooses appropriate units of measurement for area and volume and converts from one unit to another. The input signal a spectrum analyzer measures is electrical, however, spectral compositions of other signals, such as acoustic pressure waves and optical light waves, can be considered through the use of an appropriate transducer. 6. LabVIEW is an integral part of virtual instrumentation because it provides an easy-to-use application development environment designed specifically with the needs of engineers and scientists in mind. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. scale records the foll... JEE Main 2020 (Online) 6th September Evening Slot. 8. In what unit is the area measured? Average detection – average detection uses all of the data points within theinterval to consider the display point value. Adjusting the bandwidth of this filter allows for the discrimination of signals with closely spaced frequency components, while also changing the measured noise floor. What are the various Dynamic characteristics? What is meant by special Oscilloscope? What is the unit for measuring the amplitude of a sound? State the disadvantages of PMMC instruments. 1. mm. Chapter 1 - Units and Measurements CBSE Class 11 Physics Important Questions Chapter 1 Units and Measurement are provided here for students. 13. Choose the option that corresponds to... JEE Main 2016 (Online) 9th April Morning Slot. Name the loop test methods used in location of fault in fiber. The megger is an instrument used for the measurement of high resistance and insulation resistance. On this code-breaker worksheet, students need to convert the metric measurements into the units shown. What are the various types of Bridges? Series ohm meter method Shunt ohm meter method. (i)Insulation resistance of cables (ii) High resistance circuit elements (iii)Volume resistivity of a material (iv)Surface resistivity. Measurement quiz with questions and answers for your quizzes. What is the purpose of braking mechanism.? The period of oscillation of a simple pendulum is $$T = 2\pi \sqrt {{L \over g}} $$. NEET Physics : Units and Measurement. What are the types of Spectrum Analyzer? (i)Break down of cable insulation. (i)Single wattmeter method (ii) Two wattmeter method (iii) Three wattmeter method. 4. Various methods of fiber optic power measurement are. How the phase angle is measured in polar type potentiometers?. The process in which the trace of the waveform is obtained on the phosphor screen, and when the trace is present for long time, the heat generated is capable of destroying the phosphor screen, which is known as phosphor burning. Current coil with series magnet Voltage coil with shunt magnet All disc Braking magnet Registering mechanism. Cannot be used for ac m/s Some errors are caused by temperature variations. Where high resistance measurement is required? Name the constructional parts of induction type energy meter. In a system of units in which unit of length is 10cm and unit of mass is 100g, yhen the value of density … 16. Name the different essential torques in indicating instruments. What are the constructional parts of current transformer? [2010 OL] (i) Which of the following is the unit used to measure mass? This is done by power (rms)averaging, voltage averaging, or log-power averaging. J-kg. 1. 6. 2. also used to perform some special functions such as storage of information, retrival of waveform, stability etc.. 18. The solved question papers from chapter 2 Units and Measurements have all type of questions may be asked in annual exams such as VSA very short answer type questions, SA short answer type questions, LA long answer type questions, VBA value based questions and HOTS higher order thinking skill based questions. Measured value of L is 20.0 cm kno... A student measured the length of a rod and wrote it as 3.50 cm. Units & Measurement in Physics Chapter Exam Instructions. Register online for Physics tuition on Vedantu.com to … The primary use is to measure the power of the spectrum of known and unknown signals. No hysterisis loss Very accurate High efficiency. None of them is dimensionless. Less expensive Can be used for both dc and ac Reasonably accurate. For high frequency ac requirement audio frequency oscillators are used. 16. 17. Measurement. (i)Used for m/s of unknown emf (ii) Used for ammeter calibration (iii)Used for Voltmeter calibration(iv)Used for wattmeter calibration. (ii) Motor driven alternator (iii) Audio frequency and radio frequency oscillator. Span specifies the range between the start and stop frequencies. Question 1 Convert the following measurements into m. a. ฀. The std variable mutual inductance meter is called as inductometer. 15. In which cases audio frequency oscillators are used as ac source. In the following ‘I’ refers to current and other symbols have their usual meaning. All Chapter 2 - Units and Measurement Exercises Questions with Solutions to help you to revise complete Syllabus and boost your score more in examinations. The density of material in CGS system of units is 4 g / c m 3. 2x 1000. x 100. A body of mass m = 3.513 kg is moving along the x-axis with a speed of 5.00 ms−1. Nav. Can be used for m/s of both magnitude and phase angle Can be used for m/s of inductance of the coil. Practice Test: Question Set - 01 1. (A) Decibel (B) Coulomb (C) Hum (D) Cycles. Of the following quantities, which one has dimensions different from the remaining three (1) Energy per unit volume (2) Force per unit area (3) Product of voltage and charge per unit volume The density of a solid metal sphere is determined by measuring its mass and its diameter. km2. Fixed coil Moving Coil Current limiting resister Helical spring Spindle attached with pointer, 2. 13. 18. Monitoring of processes and operations. Multiplexing is the the process of combining several input signals. However, there are still places and occasions where the imperial system of measurement is used. In a typical spectrum analyzer there are options to set the start, stop, and center frequency. The balance equation is dependent of frequency and therefore any changesin frequency will affect the measurements. 14. 2. State the disadvantages of Hay’s bridge.? Let [$${\varepsilon _0}$$] denote the dimensional formula of the permittivity of vacuum. What are the constructional parts of wattmeter? By practising these questions, students get thorough with the important topics of this chapter. A voltmeter is an instrument used for measuring electrical potential difference between two points in an electric circuit. 11. JEE Mains Units, Dimensions, Measurement Questions - In C.G.S. As per the new pattern of examination, NEET is increasing the MCQs in various question papers for Units and Measurements for Physics. 15. (ii) Leakage errors. What ranges of resistance can be measured by using doctor ohmmeter. 14. But w... JEE Main 2016 (Online) 10th April Morning Slot. A, B, C and D are four different physical quantities having different 1. In another system where the fundamental Free PDF download of NCERT Solutions for Class 11 Physics Chapter 2 - Units and Measurement solved by Expert Teachers as per NCERT (CBSE) textbook guidelines. There are two methods of frequency synthesis, they are (i) Direct frequency synthesis (ii)In-direct frequency synthesis. Drysdale Tinsley potentiometer Gall Tinsley potentiometer. (ι) Sweep signal generator (ii) Audio frequency signal generator (ιιι) RF signal generators. Home GK Units Units & Measurements GK Questions and Answers - Set 01 Units & Measurements GK Questions and Answers - Set 01 GK Units Edit G.K. CBSE Papers, Questions, Answers, MCQ ... Blog provides NCERT solutions, CBSE, NTSE, Olympiad study material, model test papers, important Questions and Answers asked in CBSE examinations. 3. The true RMS meter is used to determine the rrot mean square value of the current and voltage. J-kg 2. We would also learn about commonly used tools for measurement of the physical quantities like length, mass, time, area and volume. The distance D of sun from the earth is 1.496 × 10^11m . How the range of instrument can be extended in PMMC instruments. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog to digital converter. 4. Dimensions of $${1 \over {{\mu _0}{\varepsilon _0}}}$$, where symbols have their usual meaning, are, The physical quantities not having same dimensions are, Identify the pair whose dimensions are equal. This is due to higher RBW filters passing more frequency components through to the envelope detector than lower bandwidth RBW filters, therefore a higher RBW causes a higher measured noise floor. And later it was given IEEE standard and was known as IEEE 488 bus. Correct Answer. Variable Capacitor is costliest. This is the frequency that is in the middle of the display’s frequency axis. 2. A FFT spectrum analyzer computes the discrete Fourier transform (DFT), a mathematical process that transforms a waveform into the components of its frequency spectrum, of the input signal. (ii)0 to 5 milli ohms (iii)0 to 50 milli ohms (iv) 0 to 500 milli ohms (v)0 to 5 ohms. Name any one Bridge that is used to measure the frequency? Q-factor is known as the quality factor. Various Dynamic characteristics are i)Fidelity, (ii)Speed of Response,(iii)Time Delay,(iv)Lag,(v)Dynamic error. 9. Any unwanted harmonics that are present along with the needful information is known as Harmonic Distortion. Some spectrum analyzers, such as real-time spectrum analyzers, use a hybrid technique where the incoming signal is first down-converted to a lower frequency. Get help with your Measurement homework. Download latest questions with answers for Physics Units and Measurements in pdf free or read online in online reader free. CGS System In this system, the unit of length is centimetre, the unit of mass is gram and the unit of time is second. Frequency is defined as the number of events of a particular sort occurring in a set period of time. Units are the fundamental quantities of physics; Various units of measurements are Fundamental Units e.g. Deflecting torque Controlling torque Damping torque. The resolution bandwidth filter or RBW filter is the bandpass filter in the IF path. Physics is a quantitative science, based on measurement of physical quantities.Certain physical quantities have been chosen as fundamental or base quantities. 56100 mm c. 3.7 km Which type of detector is used in ac bridges? What is meant by Virtual instrumentation? Units, Dimensions and Errors MCQ with detailed explanation for interview, entrance and competitive exams. (i)AC supply with step-down transformer. (ii) Short circuit fault (iii) Open conductor fault. How resistance is measured by using ohm meter method. Name the bridge circuits used for the m/s of mutual inductance. 15. The respective number of significant figures for the numbers 23.023, 0.0003 and 2.1 $$ \times $$ 10–3 are, The dimension of magnetic field in M, L, T and C (coulomb) is given as. IEEE 488 bus is formerly known as Hewlett Packard interface Bus. Name the ac sources used in ac bridges. What are the various methods of RF power measurement? DAQ is known as Data Acquisition system, it is meant for collecting the data, organizing the data, processing the data and storing the results. DSO is known as digital storage oscilloscope, it is used for storing the waveform in a digital form. [2007 OL] It is the process by which adjusting the current flows through the potentiometer coil to make the voltage across the std cell is equal. In ammeter by connecting a shunt resister In voltmeter by connecting a series resister. How resistance is measured in direct deflection method. Why Is LabVIEW Ideal for Creating Virtual Instruments? These two parameters allow for adjustment of the display within the frequency range of the instrument to enhance visibility of the spectrum measured. Name the different essential torques in indicating instruments. 8. What are the various Static characteristics? ... CBSE Class 11 - Physics - Units and Measurements - MCQs Multiple Choice Questions . (iii)Autoranging power meter. Name the errors caused during measurement Error due to pressure coil inductance Error due to pressure coil capacitance Error due to methods of connection Error due to stray magnetic fields. [2006 OL] Find the area of the rectangle drawn on the right using the measurements given. What is meant by Resolution Bandwidth? The oscilloscope which is not only meant for viewing the waveform , but also used to perform some special functions such as storage of information, retrival of waveform, stability etc.. Along with the textbook question, this solution has exemplary problems, worksheets, questions from previous question papers, numerical problems, MCQs, short answer questions, tips and tricks. 24. These Unit and Measurement Quiz Questions with Answers are useful for competitive exams like IIT, JEE, NEET, AIIMS, JIPMER etc. What are the various methods of fiber optic power measurement? Also, peak detection does not give a good representation of random noise. m/s of dc voltage and current used in dc galvanometer. Name the types of instruments used for making voltmeter and ammeter. Students should practice the multiple choice questions to gain more marks in NEET exams. Units & Measurements MCQ Test - Set 03 GK Units Edit G.K. What are the types of frequency synthesizer? Static characteristics are the set of rules or criteria that is defined for those instruments that varies very slowly with time or remains a constant. The frequency between the stop and start frequencies on a spectrum analyzer display is known as the center frequency. Many inputs are multiplexed and the result is produced based on the select signal. What are the various types of signal generators? This method needs a std variable capacitor. An answer sheet can also be found below. Browse from thousands of Measurement questions and answers (Q&A). 4. 22. 10. It is used in m/s of errors in CTS. State the advantages of Moving iron type instruments. CRO is used in Medical field Waveform analysis Study of time period and amplitude of the waveform Military applications. 5. (i)M/s of self inductance. It consits of a sample and hold circuit, control logic and an A/D converter the waveform can be stored in a buffer amplifier. This solution provides appropriate answers to the questions provided in the textbook. State the advantages of ac potentiometers?. State the disadvantage of Maxwell-wein bridge. State the advantages of Hot wire type instruments, Can be used for both dc and ac Unaffected by stray magnetic fields Readings are independent of frequency and waveform. Such an instrument is sometimes referred to as a cymometer, particularly one of Chinese manufacture. Digital voltmeters (DVMs) are usually designed around a special type of analog-to-digital converter called an integrating converter. Answer: Physical quantities are called large or small depending on the unit (standard) of measurement. Spectrum analyzer measures the magnitude of an input signal versus frequency within the full frequency range of the instrument. You need to know the basics of cm and km. (i)Bolometer power meter. Answer. phosphor exhibit the fluorescence property, it is known as phosphorescence. a measurement, so that it is understood by everyone in the same sense? The fundamental quantities that are chosen are Length, Mass, Time, electric current, thermodynamic temperature, amount of substance, and luminous intensity. 17. For example, the distance between two cities on earth is measured in kilometres but the distance between stars or inter —galactic distances are measured in parsec. 20. Various Static characteristics are Accuracy, Precision, Error, Threshold, Bias, Linearity, Stability, Reproducibility Hysterisis, Range, Dead Space, Sensitivity. 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