Engineering Metrology Multiple Choice Questions on “Indicators Gauges”.
1. What is the alternative name of passmeter?
a) Dial-type adjustable ring gauge
b) Dial-type adjustable snap gauge
c) Dial-type adjustable plain gauge
d) Dial-type adjustable plug gauge
Answer: b
Clarification: Passmeter is also called as a dial-type adjustable snap gauge. Passmeter instrument is quite similar to the micrometer screw gauge. A passmeter has very big scale present in its frame on which a pointer moves.
2. Which of the following is used for magnification purpose in passmeter?
a) Lever and gear movement
b) Anvil and lever
c) Anvil and gear
d) Clamping screw and anvil
Answer: a
Clarification: The lever and gear movement are used for magnification purposes in a passmeter. It is an indicator gauge and even much more accurate than the dial indicator instrument.
3. Which of the following is a part of internal dial gauge?
a) Solid body and clamping screw
b) Solid tube body and lever
c) Solid tube body with finger probe
d) Hollow tube body and lever
Answer: d
Clarification: Internal dial gauges is a comparison gauge and used to check bore diameters by the comparative method. The instrument consists of a hollow tube body which contained a lever pivoted.
4. What is the range of measurement in a single setting of internal dial gauge with scale division value of 0.002 mm?
a) ±0.06 mm
b) ±0.02 mm
c) ±0.01 mm
d) ±0.1 mm
Answer: a
Clarification: The range of measurement in a single setting of internal dial gauge is approximately ± 0.06 with scale division value of 0.002 mm and ± 0.22 millimeter for scale division value of 0.01 millimeter.
5. What is the smallest size that can be measured by internal dial gauge?
a) 5 to 10 mm in diameter
b) 7 to 10 mm in diameter
c) 11 to 18 mm in diameter
d) 5 to 18 mm in diameter
Answer: c
Clarification: The contacts present in internal dial gauge are interchangeable having extension rods to broaden the measurement range. This instrument can check the smallest size of the order or 11 to 18 mm in diameter.
6. How many tolerance pointers are provided on the scale of passmeter?
a) 1
b) 2
c) 3
d) 4
Answer: b
Clarification: There are two tolerance pointers are present on the scale of passmeter which can be set in any position just by unscrewing the cap which is present on the cover and by using a special setting wrench.
7. What is the value of pressure applied by the spring on the back of the movable anvil in passmeter?
a) 500±50 grammes
b) 100±5 grammes
c) 500±100 grammes
d) 700±200 grammes
Answer: d
Clarification: A detent is present in the passmeter which is used for retracting the movable anvil while taking the measurement. The spring which is present at the back of the movable anvil exerts a contact pressure of about 700 ± 200 grammes.
8. What is the diameter of the contact point of a spindle in dial pipe gauge?
a) 2.5 mm
b) 3.5 mm
c) 4.5 mm
d) 5.5 mm
Answer: a
Clarification: Dial pipe gauge is specially used for easy measurement of pipe’s wall thickness. It is a dial thickness gauge. Diameter of a contact point of the spindle is 2.5 mm. Minimum measurable inside diameter of pipe is about 3.5 mm.
9. What is the largest size range that can be checked by internal dial gauges?
a) 156 to 200 mm
b) 106 to 200 mm
c) 86 to 120 mm
d) 56 to 120 mm
Answer: c
Clarification: The largest size range that can be checked by internal dial gauge is from 86 to 120 mm. It has lever whose one end of the lever is attached to the movable contact of this instrument and other end actuates the pointer.
10. How many contacts are present in internal dial gauges?
a) 1 which is fixed
b) 2, one fixed and other movable
c) 3, two fixed and one movable
d) 4, two fixed and two movable
Answer: c
Clarification: The internal dial gauge instrument has three contacts which are spaced equally along the circumference of the head. Out of three contacts, one is movable and the other two are fixed or non-movable type.
11. Which of the following is not true about passmeter?
a) Fixed spindle
b) Adjustable anvil
c) Used for external measurement
d) Movable pointer
Answer: a
Clarification: An adjustable anvil is present in passmeter. The adjustment of this anvil is done by first removing the protecting cover from the frame and then releasing the clamping screw. A movable spindle is present in passmeter.
12. Upto which depth dial caliper gauge can reach?
a) 60 mm
b) 80 mm
c) 20 mm
d) 10 mm
Answer: b
Clarification: Internal caliper gauge is used for comparison of inside diameter quickly. It can reach 80 mm of depth. It is a comparison gauge and can be used with micrometer or master ring for zero setting.