1. Master height Gauge is used to measure ________
a) Hole location
b) Groove widths
c) Pitches
d) Concentricity
Explanation: Master height gauges can be used as a height standard to measure hole location, a width of groove, pitches etc. To check concentricity universal measuring instrument is a more accurate device.
2. Which of the following is incorrect about master height gauges?
a) Can provide a high precision standard
b) It has a digital readout
c) Has a sliding attachment
d) Built-in microprocessor
Explanation: There is no microprocessor and micro switch in master height gauges. A master height gauge has a rectangular column with a sliding attachment.
3. Which of the following option is correct for given statements?
Statement 1: Master height gauge can store measurement in memory.
Statement 2: Functioning of master height gauges is slower than electronic digital readout height gauge.
a) T, F
b) F, F
c) T, T
d) F, T
Explanation: Master height gauges are relatively slower than electronic digital read out height gauges. They require more skilled operators
4. What is the difference between surface gauge and height gauge?
a) Only surface gauge is used on a surface plate
b) Height gauge has a heavy base
c) Height gauge has a measuring head
d) Surface gauge has a smooth and flat base
Explanation: In toolroom applications, the difference between both is, surface gauge has a scriber point and height gauge has a measuring head.
5. Which of the following instrument is of the highest accuracy?
a) Digital length gauge
b) Inside micrometer
c) Universal measuring instrument
d) Universal height micrometer
Explanation: Universal measuring instrument is of the highest accuracy due to the presence of sensors, micro switches and microprocessors.
6. Which of the following option is incorrect about the universal measuring instrument?
a) Twin digital display is present
b) Highly skilled operator is required
c) Computation capabilities
d) Automatically sense diameter of bores
Explanation: Twin display is present one in the front and other in the side for easy reading. Low skilled operator is required as it has automatic computation capabilities which eliminate possibilities of operator’s error
7. Which of the following statement is true for following statements about universal measuring instrument?
Statement 1: Microprocessor and micro switches are present.
Statement 2: Coefficient of thermal expansion of measuring instrument made of steel is the same as a component to be measured.
a) F, T
b) T, T
c) F, F
d) T, F
Explanation: Same coefficient of thermal expansion of measuring instrument and component to be measured hence, there is no effect of temperature variation on measuring accuracy.
8. What is the permissible measuring speed in universal measuring instrument for error free reading?
a) 1 m/sec
b) 1 mm/sec
c) 1 cm/sec
d) 2 cm/sec
Explanation: 1 m/second is the permissible measuring speed for error free reading. These instruments saves inspection time with high accuracy.
9. How many push buttons are needed for convenient and easy operations?
a) 5
b) 6
c) 7
d) 8
Explanation: There are 5 push button keys are present near readout for easy measurement. Functions of these 5 buttons are: selection of measuring program, input of probe constant, changing reference datum, addition and subtraction and zero setting.
10. Which of the following is correct about electronic display unit of universal measuring instrument?
a) Sensitive to electrical interference
b) Non-removable
c) Cast iron protection cover
d) It is plug-in type
Explanation: It is insensitive to electrical interference and oil film. It is easily interchangeable. There is an aluminium protection cover for an electronic display unit