1. Which of the following instrument is of the highest accuracy?
Digital length gauge
Inside micrometer
Universal measuring instrument
Universal height micrometer
Answer.3. Universal Measuring instrument
Explanation:-
A universal measuring machine (UMM) is used to measure the geometric features of components. The measurement can be performed in both absolute and comparative modes, thereby providing a convenient means to carry out inspection of length and diameters of both plain and threaded work, tapers, and pitch of screw threads to a high degree of accuracy.
2. A universal micrometer can measure
Outside micrometer
Depth Micrometer
Step Micrometer
All of the above
Answer.4. All of the above
Explanation:-
Universal micrometer:- It has interchangeable anvils such as flat, spherical, spline, disk, or knife edge. It is called universal because of its modular design. The micrometer fitted with the required accessories can function as an outside micrometer, a depth micrometer, a step micrometer, etc.
3. A universal bevel protractor is used to measure
Angle
Length
Area
Diameter
Answer.1. Angle
Explanation:-
A universal bevel protractor is an instrument that has a mechanism that enables easy measurement and retention of a reading.
It is an angular measuring instrument capable of measuring angles to within 5 min
The name universal refers to the capacity of the instrument to be adaptable to a great variety of work configurations and angular interrelations.
The main scale on the dial is divided into four quadrants, each measuring 90°. Each division on this scale reads 1°. The degrees are numbered from 0 to 90 on either side of the zeroth division.
4. What is the range of voltage fluctuations that can be taken care of by an electronic unit in a universal measuring instrument?
18% to 20%
-10% to +50%
-18% to +20%
10% to 50%
Answer.3. 18% to +20%
Explanation:-
Universal measuring instrument uses uninterrupted power supply is provided to the electronic unit by power supply unit. The range of voltage fluctuation is between – 18 to +20%.
5. Which of the following option is true for the given statements?
Statement 1: (UMM) is used to measure the geometric features of components
Statement 2: UMM consists of a fixed head and a movable head
Both statements -1 and statement – 2 are true and statement – 2 is the correct explanation of statement – 1
Both statements -1 and statement – 2 are true but a statement – 2 is not the correct explanation of statement – 1
Statement -1 is true and statement – 2 is false
Statement -1 is false and statement – 2 is true
Answer.1. Both statements -1 and statement – 2 are true and statement – 2 is the correct explanation of statement – 1
A universal measuring machine (UMM) is used to measure the geometric features of components.
UMM consists of a fixed head and a movable head also called the measuring carriage. The part to be inspected is mounted on the clamping device. The spindle centers, which are fitted with sleeves of hardened steel, ensure accurate centering of various tools such as the locating microscope, feller microscope, goniometer microscope, spotting tool, and locating indicator.
6. Universal measuring instrument used to calibrate
Plug gauge
Ring gauge
Snap gauge
All of the above
Answer.4. All of the above
Explanation:-
UMM-Measuring machine used to quantify – Inside, outside dimensions (length, diameter, center distance, etc.) – Angles Threads (inside and outside) Can check hard and soft materials. It can calibrate all types of standards including plug gages, ring gages, thread plug gages, thread ring gages, snap gages, depth gages, dial indicators, and more.
7. A universal measuring instrument can withstand up to which temperature for correct reading?
100°C
75°C
65°C
40°C
Answer.4. 40°C
Explanation
Universal measuring instrument Display unit can withstand temperature up to :10-40 °C and Operational humidity limit 30 – 80%.
8. The main disadvantage of a universal measuring machine is
Slow
Required Skill labor
Both 1 and 2
All of the above
Answer.3. Both 1 and 2
Explanation:-
The universal measuring machine is a very slow machine that requires a highly skilled and patient operator to use, and the accuracy built into these machines far outstripped the needs of most industries.
As a result, the universal measuring machine today is only found as a special-purpose machine in metrology laboratories. Because the machine can make comparative length measurements without moving linear axes, it is a valuable tool in comparing master gauges and length standards.
While universal measuring machines were never a mass-produced item, they are no longer available on a production basis and are produced on a to-order basis tailored to the needs of the metrology lab purchasing it.
Manufacturers that perform work that must be measured on such a machine will frequently opt to subcontract the measurement to a laboratory that specializes in such.
9. Which of the following option is correct for given statements about universal measuring machines?
Statement 1: The spindle of UMM has an electronic test indicator Statement 2: The UMMs, are never interfaced with a computer
Only statement 1 is true
Only statement 2 is true
Both the statements are true
Both the statements are not true
Answer.1. Only statement 1 is true
Explanation:-
The UMMs spindle centers are fitted with sleeves of hardened steel, ensure accurate centering of various tools such as the locating microscope, feller microscope, goniometer microscope, spotting tool, and locating indicator.
The spindle has an electronic test indicator rather than a probe. The indicator can be accurately controlled and moved across a part, either along a linear axis or radially around the spindle.
The UMMs, which are presently available in the market, is interfaced with a computer, which enables easier recording of test results and subsequent analysis. A user-friendly software interface enables the user to select the testing procedure, resolution, and type of test probe.
10. Which of the following is correct about the electronic display unit of the universal measuring instrument?
