This is the Multiples Choice Questions Part 3 of the Series in Tests and Measurements as one of the Electronics Engineering topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Exam Questions in Electronics Engineering field, Electronics Books, Journals and other Electronics References.
MCQ Topic Outline included in ECE Board Exam Syllabi
- MCQs in Volt, Ohm, Ammeter (analog/digital)
- MCQs in R-L-Z bridges
- MCQs in Oscilloscope
- MCQs in Cable Testers
- MCQs in RF Meters
- MCQs in Signal Generators (audio, RF, video)
- MCQs in Noise Generators
- MCQs in Power
- MCQs in Reflectometer
- MCQs in Grid dip meter
Continue Practice Exam Test Questions Part 3 of the Series
Choose the letter of the best answer in each questions.
101. What is the degree of exactness of measurement when compared to the expected value of the variable being measured?
A. Accuracy
B. Error
C. Deviation
D. Precision
Answer: Option A
Solution:
102. The art or process of determining the existence or knowing the magnitude of something, directly or indirectly in terms of a recognized standard.
A. Measurement
B. Testing
C. Recording
D. Evaluating
Answer: Option A
Solution:
103. A procedure or sequence of operations for determining whether a component or equipment is functioning or working normally.
A. Measurement
B. Test
C. Recording
D. Evaluating
Answer: Option B
Solution:
104. In measurement, what do you call the degree of exactness compared to the expected value of the variable being measured?
A. precision
B. accuracy
C. sharpness
D. correctness
Answer: Option B
Solution:
105. A measure of consistency or repeatability of measurements is called
A. precision
B. accuracy
C. sharpness
D. correctness
Answer: Option A
Solution:
106. Precision is also known as
A. correctness
B. accuracy
C. sharpness
D. reproducibility
Answer: Option D
Solution:
107. In measurements, the sum of a set of numbers divided by the total number of pieces of data in the given set is called
A. geometric mean
B. algebraic mean
C. arithmetic mean
D. effective value
Answer: Option C
Solution:
108. The deviation of a reading from the expected value
A. accuracy
B. precision
C. error
D. difference
Answer: Option C
Solution:
109. Errors due to frictions of the meter movement, incorrect spring tension, improper calibration or faulty instruments:
A. Observational errors
B. Environmental errors
C. Instrument errors
D. Gross errors
Answer: Option C
Solution:
110. When an instrument is subjected to harsh environments such as high temperature, strong magnetic, electrostatic or electromagnetic field, it may have detrimental effects and cause errors known as
A. Observational errors
B. Environmental errors
C. Instrument errors
D. Gross errors
Answer: Option B
Solution:
111. Errors introduced by the observer or user.
A. Observational errors
B. Environmental errors
C. Instrument errors
D. Gross errors
Answer: Option A
Solution:
112. Errors in analog meter reading due to your physical position with respect to the meter scale.
A. parallax error
B. angular error
C. linear error
D. deviation
Answer: Option A
Solution:
113. What do you call the difference between any number within the set of numbers and the arithmetic mean of that set of numbers?
A. parallax error
B. angular error
C. linear error
D. deviation
Answer: Option D
Solution:
114. An instrument or device having recognized permanent or stable value that is used as a reference.
A. standard instrument/device
B. reference instrument/device
C. fixed instrument/device
D. ideal instrument/device
Answer: Option A
Solution:
115. The smallest change in a measured variable to which an instrument will respond.
A. quantize value
B. resolution
C. minimum
D. step size
Answer: Option B
Solution:
116. A device or mechanism used to determine the value of a quantity under observation.
A. measuring kit
B. evaluator
C. instrument
D. sensor
Answer: Option C
Solution:
117. What is the basic unit for measuring current flow?
A. coulomb
B. ampere
C. atomic weight
D. volt
Answer: Option B
Solution:
118. An instrument used to detect and measure the presence of electrical current is generally called
A. DโArsonval meter
B. electrodynamometer
C. galvanometer
D. potentiometer
Answer: Option C
Solution:
119. What is the common type of meter movement?
A. Fixed coil
B. Farad
C. DโArsonval
D. Digital
Answer: Option C
Solution:
120. A permanent-magnet moving-coil instrument.
A. induction instrument
B. DโArsonval meter movement
C. moving-iron instrument
D. moving-magnet instrument
Answer: Option B
Solution:
121. An instrument which depends on current in one or more foxed-coils acting on one or more pieces of soft iron, at least one of which is movable.
A. moving-magnet instrument
B. moving-iron instrument
C. DโArsonval meter movement
D. induction instrument
Answer: Option B
Solution:
122. What is that device, which depends on the action of a movable permanent magnet, in aligning itself in the resultant field, produced either by a fixed permanent magnet and adjacent coil or coils carrying current, or by two or more current-carrying coils whose axes are displaced by a fixed angle?
A. DโArsonval meter movement
B. induction instrument
C. moving-magnet instrument
D. moving-iron instrument
Answer: Option C
Solution:
123. What ammeter is mostly used in measuring high-frequency currents?
A. electrostatic
B. moving-coil
C. dynamometer
D. thermocouple
Answer: Option D
Solution:
124. Measurement of high dc-voltages is usually done by using
A. Electrostatic
B. moving-coil
C. dynamometer
D. thermocouple
Answer: Option A
Solution:
125. Measuring instrument that can be used only to measure voltages.
A. electrostatic
B. thermocouple
C. dynamometer
D. permanent-magnet moving-coil
Answer: Option A
Solution:
126. This instrument measures temperatures by electric means, especially temperatures beyond the range of mercury thermometers.
A. pyrometer
B. electrostatic instrument
C. moving-magnet instrument
D. permanent-magnet moving-coil instrument
Answer: Option A
Solution:
127. This instrument refers to that one, which measures the intensity of the radiation, received from any portion of the sky.
A. megaohmmeter
B. pyranometer
C. Megger
D. galvanometer
Answer: Option B
Solution:
128. What is the normal indication on a megger (megohmmeter) when checking insulation?
A. one
B. infinity
C. middle of scale
D. zero
Answer: Option B
Solution:
129. Resistance measuring instrument particularly used in determining the insulation resistance.
A. megaohmmeter
B. Megger
C. galvanometer
D. A or B are correct
Answer: Option D
Solution:
130. An electrodynamic meter used to measure power
A. hook-on type voltmeter
B. wattmeter
C. watt-hour meter
D. multi-meter
Answer: Option B
Solution:
131. A device used to mechanically measure the output power of a motor.
A. dynamometer
B. Megger
C. concentric-vane instrument
D. radial-vane instrument
Answer: Option A
Solution:
132. An indicating instrument whose movable coils rotate between two stationary coils, usually used as wattmeter.
A. induction-type meter
B. radial-vane instrument
C. electrodynamometer
D. concentric-vane instrument
Answer: Option C
Solution:
133. Dynamometers are mostly used as
A. voltmeter
B. ammeter
C. ohmmeter
D. wattmeter
Answer: Option D
Solution:
134. What damping method is generally used in dynamometers?
A. spring
B. fluid friction
C. eddy-current damping
D. air friction
Answer: Option D
Solution:
135. Which dynamometer instrument has a uniform scale?
A. voltmeter
B. ammeter
C. ohmmeter
D. wattmeter
Answer: Option D
Solution:
136. For a dynamometer to be able to measure high current, a __________ should be used.
A. shunt resistor
B. multiplier
C. CVDT
D. current transformer
Answer: Option D
Solution:
137. Error in voltmeter reading is due to
A. insertion
B. loading
C. battery aging
D. conversion
Answer: Option B
Solution:
138. Error in ammeter reading id due to
A. insertion
B. loading
C. battery aging
D. conversion
Answer: Option A
Solution:
139. Which type of meter requires its own power source?
A. A voltmeter
B. An ammeter
C. An ohmmeter
D. A wattmeter
Answer: Option C
Solution:
140. Error in ohmmeter reading is due to
A. insertion
B. loading
C. battery aging
D. meter friction
Answer: Option C
Solution:
141. Decreasing the value of the shunt resistor of an ammeter, its current measuring capability
A. increases
B. decreases
C. remains constant
D. none of the above
Answer: Option A
Solution:
142. Increasing the value of the series resistor of a voltmeter, its voltage measuring capability
A. increases
B. decreases
C. remains constant
D. none of the above
Answer: Option A
Solution:
143. A device that is used to measure current without opening the circuit
A. megger test
B. clamp probe
C. ammeter
D. multi-meter
Answer: Option B
Solution:
144. Which of the ammeter below that has no insertion error?
A. DโArsonval meter
B. clamp-meter
C. micrometer
D. meter with current transformer
Answer: Option B
Solution:
145. To prevent damage of the multi-range ammeter during selection, a/an _________ should be used.
A. direct shunt
B. selected shunt
C. Ayrton shunt
D. shunt fuse
Answer: Option C
Solution:
146. For the greatest accuracy, what should be the input impedance of a VOM be?
A. 1,000 ohms/V
B. 50,000 ohms/V
C. as large as possible
D. as small as possible
Answer: Option C
Solution:
147. Voltage measurement in a high impedance circuit requires a voltmeter with
A. low input impedance
B. high input impedance
C. high voltage probe
D. low voltage probe
Answer: Option B
Solution:
148. A meter has a full-scale current of 50 ฮผA, what is its sensitivity?
A. 20 kฮฉ/V
B. 20 V/ฮฉ
C. 50 kฮฉ/V
D. 50 ฮผA/V
Answer: Option A
Solution:
149. If a meter with a full-scale current of 100ฮผA is used as an ac voltmeter with half-wave rectification, its ac sensitivity is
A. 10,000 ฮฉ/V
B. 4,500 ฮฉ/V
C. 9,000 ฮฉ/V
D. 100 ฮฉ/V
Answer: Option B
Solution:
150. In order to make an accurate measurement as possible, the internal resistance of a voltmeter must be
A. as high as possible
B. as low as possible
C. proportional to the voltage range
D. proportional to the current range
Answer: Option A
Solution:
Questions and Answers in Tests and Measurements
Following is the list of multiple choice questions in this brand new series:
Complete List of MCQs in Electronics Engineering per topic
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Sir , I need solution for the solving problems