Physics · Science General
Units and Measurement
998 Questions
Master the fundamentals of physics with these practice questions on units and measurement. The topics include fundamental SI units, derived quantities, and specific units for power, force, and light. These questions are essential for building a strong foundation for competitive exams.
SI fundamental unitsUnits of powerDerived quantities unitsThermal energy unitsVolume measurement unitsElectric current units
Units and Measurement Questions
A,B,E
Correct answer
Explanation
The basic building blocks of Teradata architecture are PE (Parsing Engine), AMP (Access Module Processor), and VDISK (Virtual Disk). TDP and CLIQUE are not considered basic architectural units.
A
Correct answer
Explanation
The maximum unit of CIR (Critical Illness Rider) is 10, which represents the upper limit of coverage that can be added to a base policy. Options B, C, and D (3, 8, and 5) are below this maximum limit and therefore incorrect.
B
Correct answer
Explanation
ZIN is the new unit of measure incorporated by Kraft. CS (Case), CSE (Case Export), and KG (Kilogram) are standard SAP UoMs, while ZIN appears to be a custom UoM addition specific to Kraft's requirements.
B
Correct answer
Explanation
Unit of Measure classes are organization-specific in Oracle applications. Different organizations can define and maintain their own UOM classes based on their operational requirements. The statement claims they are NOT organization specific, which is incorrect.
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a. Each
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b. Quantity
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c. Part number
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d. None
A
Correct answer
Explanation
Each (EA) is a standard Unit of Measure in Oracle Inventory and other ERP systems, used for counting individual items. Quantity is a concept, not a UOM itself. Part number is an identifier, not a measurement unit.
D
Correct answer
Explanation
There are six valid Android dimension units:
px: pixels
in:inches
mm: milimeters
pt:points
dip:density independent pixels
sp:scaled pixel
cp is not a valid Android dimension units.
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Ampere
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Ampere/metre
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Ampere/metre2
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Ampere-metre
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a and d
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b and c
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a and b
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b and d
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a, b and d
B
Correct answer
Explanation
Yes, it is correct as both b and c are correct.
C
Correct answer
Explanation
Gauss is the CGS unit of magnetic induction (magnetic flux density). It is named after mathematician Carl Friedrich Gauss. Note: option B has a typo ('Gress' instead of 'Gauss') but the claimed answer is still correct.
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electric resistance
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power used by a current of one ampere
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electromagnetic radio wave frequencies
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none of these
C
Correct answer
Explanation
Kilohertz (kHz) is a unit of frequency equal to one thousand cycles per second (10^3 Hz). It is commonly used to measure electromagnetic wave frequencies, especially in radio broadcasting. Electric resistance is measured in ohms, and power is measured in watts.
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Force
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Momentum
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Energy
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Charge
C
Correct answer
Explanation
Joule is the SI unit of energy, work, and heat. It's named after James Joule. Newton measures force, kg-m/s measures momentum, and coulomb measures electric charge.
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metre per second
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metre
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second
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hertz
D
Correct answer
Explanation
Hertz (Hz) is the SI unit of frequency, defined as one cycle per second. Frequency measures how many complete oscillations occur per unit time. Options A-C are units of distance or time, not frequency. Option D correctly identifies hertz.
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Celsius
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Fahrenheit
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Kelvin
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None of these
C
Correct answer
Explanation
The SI (International System of Units) unit of temperature is Kelvin, abbreviated as K. While Celsius and Fahrenheit are commonly used in everyday life, Kelvin is the scientific standard unit used in physics and chemistry.
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Calorie
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Joule
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Celsius
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None of these
B
Correct answer
Explanation
The SI unit of heat is Joule (J), named after James Prescott Joule. While calorie is a common unit for heat energy (1 calorie ≈ 4.18 J), it is not an SI unit. Celsius is a unit of temperature, not heat energy.
A
Correct answer
Explanation
The SI system has many derived units formed by combining base units. Common examples include newton (force), joule (energy), watt (power), pascal (pressure), and volt (voltage). The options 5, 3, and 1 are incorrect - there are far more derived units than these small numbers.