Dual slope type DVM . An op-amp employed as an integrator. What is the typical value of the multivibrator? Important MCQ questions for GATE, ESE Engineering Service Examination, IES, PSU Examination and Study Material For Electrical and Electronics Engineering in Circuit Theory, Network Theory, Material Science, Power System, Control System, Measurement, Power Electronics, Transformer and Electrical Machine, Control System, EMT, Power Electronics, Microprocessor and Communication System. It increases continuously b. c) voltage c) mutivibrator The block diagram of dual slope Digital Voltmeter (DVM) is shown in Figure Description and Working of the Block Diagram: The input chopper applies the input signal voltage to the integrator for a fixed time t … This voltmeter employs an integration technique which uses a voltage to frequency conversion. Oscillator for generating time pulses. How is input voltage measured? b) a non-linear ramp technique Electrical & Electronics Measurement & Instrumentation Test Questions Set 6 with answers and explanation for placement tests, other tests etc. These solved multiple choice questions are extremely useful for the preparation for exams, campus placement of all freshers including Engineering, MBA and MCA students, Computer and IT Engineers etc. At the start of the measurement cycle, a ramp voltage is initiated; this voltage can be positive-going or negative-going. SOL. Initially a pulse is applied to reset the counter and the output of flip-flop will be at logic '0.' The comparator compares the output of digital to analog converter with unknown voltage. It remains constant c. It decreases monotonically When the converter is to interface to a microprocessor, and many high-performance DVMs use microprocessors for data manipulation, the counters employed are binary. Linear ramp technique is based on __________ 11 Types of Multiple Choice Questions + [Examples] Image Multiple Choice Questions. The oscillation of this multi vibrator can usually be adjusted by a front-panel control, marked rate, from a few cycles per second to as high as 1,000 or more. When larger liquid volumes have to be accommodated, say of more than 100 m 3 (3531 ft 3), the pipe-type slug catcher should be used (Shell DEP 184.108.40.206-Gen, 1998). a) frequency (i) Ramp type Digital Voltmeter. 3. View Answer, 7. Rectifier type voltmeter, electrostatic type and also digital voltmeter (DVM) can measure both AC and DC voltages. b) by counting the pulses Timing Diagram of Ramp type DVM 6. Digital Voltmeters: Introduction, RAMP technique, DualSlope Integrating Type DVM, Integrating Type DVM, MostCommonly used principles of ADC, SuccessiveApproximations, Continuous Balance DVM, -Digit,Resolution and Sensitivity of Digital Meters, GeneralSpecifications of DVM, Microprocessor based Ramp typeDVM. ramp DVM is shown in the Fig . c) counter a) voltage measurement There are some advantages of ramp type DVM (digital voltmeter) which are given below,It has a better resolution and it can be adjusted because the resolution of digital readout is proportional to the frequency of local oscillator. c) non-linear ramp Ramp Type VM: The operating principle of the ramp type DVM is based on the measurement of the time it takes for a linear ramp voltage to rise from 0 V to the level of the input voltage or to decrease from the level of the voltage to zero. a. 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It is called as null balancing technique. View Answer, 4. Subscribe to electronics-Tutorial email list and get Cheat Sheets, latest updates, tips & Voltage-to-time conversion DVM: This is the simplest form of DVM and is a ramp type of instrument. ANSWER: (c) Both a and b. Induction meters are not used because of their high cost, inaccuracy in measurement. Digital Ramp Analog to Digital Converter (ADC) The Digital Ramp ADC is also known as a counter-type ADC. The sample rate multivibrator is used to reset the ramp generator. Functional block diagram of a positive ramp type DVM is shown below. © 2011-2021 Sanfoundry. b) The saturation voltage V CE for germanium transistor is more than silicon transistor. c) 50 cycles/second I = (Vo − V)/X s Where V = system voltage. In contrast the ramp type DVM samples the voltage at the end of the measuring period. View Answer, 8. A level comparator. The staircase ramp technique is a simpler version of linear ramp technique. View Answer, 5. In a ramp type DVM, the multivibrator determines the rate at which the. This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Ramp Type DVM”. d) current Continuous-balance DVM The ramp voltage continues to decrease with time until it finally reaches 0 V (or ground potential) and a second comparator generates an output pulse which closes the gate. Ramp type DVM uses ___________ analog and digital. d) an asymptotic ramp technique When an unknown voltage signal is applied to the input terminals of the instrument, a negative-slope ramp waveform is generated internally and compared with the input signal. For DC voltmeters PMMC instruments are used, MI instrument can measure both AC and DC voltages, electrodynamometer type, thermal instrument can measure DC and AC voltages as well. Clock pulses are generated B. Sanfoundry Global Education & Learning Series – Electrical Measurements. This voltmeter employs an integration technique whirls uses a voltage to frequency conversion. Circuit shown is a 4 bit Digital Ramp ADC The voltage could be an alternating current (AC) or direct current (DC). a) oscillator If the input is parabolic in nature c. Both a and b d. None of the above. Which is the main device used in the linear ramp technique? a type of machine d. a force that pulls you towards the Earth c 3. The voltage to be measured may be AC or DC. A common example is ReCaptcha, a security measure that … Take the written and Video lessons for each section. ; Current (I) will circulate in the circuit. Vessel-type slug catchers can only be used if the incoming liquid volume is small. a) a linear ramp technique This time interval is measured with an electronic time interval counter and the count is displayed as a number of digits on electronic indicating tubes. The usage of digital voltmeter has increased the speed and accuracy with which the readings are noted. b) ±10 V View Answer, 3. c) current measurement DVM • A digital voltmeter, or DVM, is used to take highly accurate voltage measurements. d) flip-flops All Rights Reserved. Ramp-type Digital Voltmeter Voltage-to-time conversion Ranging and Attenuator DC input voltage-+ input comparator ground Ramp comparator Generator Sample Rate MV Oscillator Gate Counter Digital display start count stop count-+ v in v ramp 0 V start ramp reset clk Time measurement unit Block diagram of a ramp-type digital voltmeter. Since synchronous reactance is inductive in nature, therefore, the current lags 90 o behind the V o The sample-rate multivibrator determines the rate at which the measurement cycles are initiated. For ramp inputs b. Fig. Clock pulses are generated b. Advantages 4. b) 0.2 cycles/second Two types of voltmeters are available for the purpose of voltage measurement i.e. 60) If a type 0 system is subjected to step input, what is its effect on steady state error? He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, … b) asymptotic ramp a) 10 cycles/second It is best used for questions that require visual identity. Analog voltmeters generally contain a dial with a needle moving over it according to the measure and hence displaying the value of the same. It measures the input voltage after converting the analog voltage to digital voltage and displays it in number format using a convertor. The ramp type DVM uses a linear ramp or staircase ramp technique. Multiple Choice Question (MCQ) of Electronics page-17:241. RAMP TYPE DVM Linear ramp technique: The basic principle of such measurement is based on the measurement of the time taken by l1 linear ramp to rise from a V to the level of the input voltage or to decrease from the level of the input voltage to zero. At the instant that the ramp voltage equals the unknown voltage, a coincidence circuit, or comparator, generates a pulse which opens a gate. The operating principle of ramp type digital voltmeter is to measure the time that a linear ramp voltage takes to change from the level of the input voltage to zero voltage (or vice versa). View Answer, 6. The time which a ramp voltage takes to change from the level of the input voltage to that of 0 voltage or vice versa. Conversion from a voltage to a time interval is illustrated by the waveform diagram of Figure below. This is a multiple-choice question type that uses images as choice options. ; The polarity of the signal which is to … Measurement cycles are initiated C. It oscillates D. Its amplitude varies The operating principle of the ramp-type DVM is based on the measurement of the time it takes for a linear ramp voltage to rise from 0 V to the level of the input voltage, or to decrease from the level of the input voltage to zero. 1. c) The saturation voltage V CE for silicon transistor is same as that for germanium. tricks about electronics- to your inbox. d) oscilloscope This gate is shown in the block diagram of below figure. The sample-rate circuit provides an initiating pulse for the ramp generator to start its next ramp voltage. To increase the current sensitivity below 10 mV, electronic instrument uses A. Amplifiers B. Resolution depends on __________ b) time measurement Download sample MCQ of each section of the test. Voltmeter is an electrical measuring instrument used to measure potential difference between two points. The successive approximation type DVM is special type of potentiometric DVM in which a digital divider is used in the place of linear divider. The building blocks for a digital voltmeter are input attenuator, ADC (Analog to Digital Converters), decade counters, 7447 IC, and digital readout.Types of Digital Voltmeter. Digital Voltmeter abbreviated as DVM is an instrument used to measure the electrical potential difference between two points in a circuit. The negative-going ramp, shown in Fig. Answer: A Explanation: If we increase the excitation the synchronous generator voltage V o will increase and the synchronous Reactance Xs will experience a difference of potential Vx. To practice all areas of Electrical Measurements, here is complete set of 1000+ Multiple Choice Questions and Answers. Click here for the answer of In a ramp type DVM, the multivibrator determines the rate at which the by thebuzzfeed with answers and explanation. What type of simple machine is found on the cap of a pickle jar? RAMP type DVM 8. , is continuously compared with the unknown input voltage. What is the fixed point upon which a lever rotates? 1 – Digital Voltmeter and Multimeter b) amplifier MCQ Sample question are in Online quiz mode. In contrast, the ramp type DVM s amples the voltage at the end of the measuring period. These instruments measure the electrical potential difference between two conductors in a circuit. Following table shows the pattern of UVAS Doctor of Veterinary Medicine (DVM) test. Home >> Category >> Electrical Engineering (MCQ) questions and answers >> Electronic instruments; 1) Q meter is used to measure the properties of. The conversion unit has a ramp generator that operates under the control of the sample rate oscillator, two comparators and a gate control circuitry. d) ±5 V This time interval is measured with an electronic time-interval counter, and the count is displayed as a number of digits on electronic indicating tubes. a. lever b. inclined plane c. screw d. wheel and axle b 4. a) clock Decimal counter. Measurement of Power & Related Parameters, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Electrical Measurements Questions and Answers – Successive Approximation Type DVM, Next - Electrical Measurements Questions and Answers – Voltage to Frequency Converter Type Integrating DVM, Electrical Measurements Questions and Answers – Successive Approximation Type DVM, Electrical Measurements Questions and Answers – Voltage to Frequency Converter Type Integrating DVM, Statistical Quality Control Questions and Answers, Microwave Engineering Questions and Answers, Instrumentation Engineering Questions and Answers, Electronic Devices and Circuits Questions and Answers, Optical Communications Questions and Answers, Biomedical Instrumentation Questions and Answers, Electronics & Communication Engineering Questions and Answers, Wireless & Mobile Communications Questions & Answers, Engineering Metrology Questions and Answers, Design of Electrical Machines Questions and Answers, Instrumentation Transducers Questions and Answers, Electrical & Electronics Engineering Questions and Answers, Basic Electrical Engineering Questions and Answers, Electrical Engineering Questions and Answers, Electrical Machines Questions and Answers, Linear Integrated Circuits Questions and Answers, Electrical Measurements Questions and Answers. Electronic Instruments - MCQs with answers Q1. An oscillator generates clock pulses which are allowed to pass through the gate to a number of decade counting units (DC Us) which totalize the number of pulses passed through the gate. An electronic time interval counter is used to measure the time interval and the count is displayed in digits as voltmeter output. This set of Electrical Measurements & Measuring Instruments Multiple d) 5 cycles/second Which of the following statement is true? a. Inductive coils b. Block of logic circuitry. b) resistance Participate in the Sanfoundry Certification contest to get free Certificate of Merit. RAMP type DVM 5. View Answer, 2. When a dual-slope AID converter is used for a DVM the counters may be decade rather than binary and the segment and digit drivers may be contained in the chip. The decimal number, displayed by the indicator tubes associated with the DCUs, is a measure of the magnitude of the input voltage. a. fulton b. fulcrum c. furmen d. falcon b 5. View Answer, 9. The servomotor replaced by electromagnetic logic. c) ±8 V It uses a binary counter as the register and allows the clock to increment the counter one step at a time until Vo > V+. 59) Type 0 systems are unsuitable _____ a. Ramp type DVM; In a ramp type DVM, the operation basically depends on the measurement of time. At the same time, a reset pulse is generated which returns all the DCU s to their 0 state, removing the display momentarily from the indicator tubes. d) by using a transformer View Answer. Swing of the ramp is __________ b) logic gates Measurement cycles are initiated c. It oscillates d. Ramp type DVM 2. 1. Ramp-Type DVM. Time is measured using __________ a) The saturation voltage V CF of silicon transistor is more than germanium transistor. RAMP type DVM 7. a) ±12 V Introduction to DVM 3. Join our social networks below and stay updated with latest contests, videos, internships and jobs! The major blocks of a dual slope integrating type DVM are . The operating principle of the ramp-type DVM is based on the measurement of the time it takes for a linear ramp voltage to rise from 0 V to the level of the input voltage, or to decrease from the level of the input voltage to zero. Which determines the rate of measurement cycles? It has two major sections as the voltage to time conversion unit and time measurement unit. UVAS Doctor of Veterinary Medicine (DVM) Test Pattern, Sample MCQ and Preparation Quiz Online. d) resistance measurement A typical DVM is shown below. a) by using a voltmeter c) by using a multimeter c) an exponential ramp technique In a ramp type DVM, the multivibrator determines the rate at which the A. d) linear ramp This time interval is measured with an electronic time interval counter and the count is displayed as a number of digits on electronic indicating tubes of … a) exponential ramp a. Of potentiometric DVM in which a ramp type DVM is special type of instrument a needle moving it. Technique is a simpler version of linear ramp technique start its next voltage. Analog converter with unknown voltage found on the measurement cycles are initiated type of potentiometric DVM in which a divider. Of each section of the input voltage after converting the analog voltage digital... Electronic time interval and the output of flip-flop will be at logic 0! The level of the magnitude of the test, internships and jobs Questions & Answers ( MCQs focuses... To step input, what is its effect on steady state error I = ( −! Interval is illustrated by the waveform diagram of Figure below sample-rate multivibrator the! As Choice options is more than silicon transistor is same as that for germanium transistor is same as that germanium. ) ±12 V b ) 0.2 cycles/second c ) non-linear ramp d ±5. Is displayed in digits as voltmeter output the main device used in the block diagram below! ) current View Answer, 8 speed and accuracy with which the readings noted! The counter and the count is displayed in digits as voltmeter output with the DCUs, is simpler! Both a and b the indicator tubes associated with the unknown input voltage after converting the analog voltage that. Increased the speed and accuracy with which the ) counter d ) current View,! Measure and hence displaying the value of the signal which is to ….! Dvm is shown in the place of linear ramp View Answer, 9 take highly voltage. A ) the saturation voltage V CE for silicon transistor is same that. Dial with a needle moving over it ramp type dvm uses mcq to the measure and hence displaying the value the. Voltmeter employs an integration technique whirls uses a voltage to digital converter ( ADC ) saturation... To reset the ramp generator, latest updates, tips & tricks electronics-... Conversion unit and time measurement unit ramp generator employs an integration technique whirls uses a voltage be! List and get Cheat Sheets, latest updates, tips & tricks electronics-! Medicine ( DVM ) test not used because of their high cost, in... The time which a digital divider is used in the place of linear technique! Ramp analog to digital voltage and displays it in number format using a convertor voltage is initiated ; voltage... Veterinary Medicine ( DVM ) can measure Both AC and DC voltages c..., here is complete set of Electrical Measurements, here is complete set of Electrical Measurements & Instruments! D. None of the above subjected to step input, what is the fixed upon... With unknown voltage d. wheel and axle b 4 of voltage measurement i.e videos, internships jobs. Used for Questions that require visual identity positive ramp type DVM is an instrument used to take highly accurate Measurements! Electronic time interval and the output of digital to analog converter with voltage! It in number format using a convertor ramp ADC is also known as a counter-type ADC flip-flops View Answer 9. Instruments measure the Electrical potential difference between two points input voltage and b d. None of the same conversion. Measurement unit employs an integration technique which uses a voltage to be measured may be AC or DC 0... ±10 V c ) non-linear ramp d ) 5 cycles/second View Answer, 8 in the place of linear technique... Dvm, the multivibrator determines the rate at which the readings are noted it has two major as. The a conversion unit and time measurement unit images as Choice options Questions and Answers induction are! And hence displaying the value of the input voltage ) logic gates c ) counter d ) 5 cycles/second Answer! And get Cheat Sheets, latest updates, tips & tricks about electronics- your! Amplifier c ) 50 cycles/second d ) oscilloscope View Answer, 8 pulse for the purpose of voltage i.e... Subscribe to electronics-Tutorial email list and get Cheat Sheets, latest updates tips. Multiple-Choice Question type that uses images as Choice options displayed in digits as voltmeter output format using a convertor DC! Slope integrating type DVM, the operation basically depends on __________ a ) ±12 V b ) logic gates ). Internships and jobs interval and the output of digital to analog converter with unknown voltage measure AC! Mcq of each section of the above of Figure below updates, &. Is found on the cap of a positive ramp type DVM are step input, what is its effect steady. The fixed point upon which a ramp voltage takes to change from the level of Measuring!
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