Sparks Academy - MCQ - TNPSC JTO - JTO - 538 - Industrial Robotics and Digital Manufacturing 538 - Unit III Knowledge of Industrial Engineering Drawing

177)

In a drawing, dimension 25 H7 refers to:

A.

Hole basis system with grade 7 tolerance

B.

Shaft basis system with grade 7 tolerance

C.

Shaft lower deviation

D.

Zero tolerance

178)

Which symbol is used for least material condition (LMC)?

A.

Ⓜ

B.

Ⓛ

C.

Ⓣ

D.

Ⓤ

179)

If a shaft is given as Ø20 g6, what does “g6” indicate?

A.

Shaft tolerance grade only

B.

Fundamental deviation (g) and IT grade (6)

C.

Hole tolerance only

D.

None

180)

In ISO system of fits, which is generally preferred?

A.

Hole-basis system

B.

Shaft-basis system

C.

Both equally

D.

None

181)

A 40 mm nominal shaft with limits +0.00/–0.02 mm is made. What is the tolerance?

A.

0.01 mm

B.

0.02 mm

C.

0.05 mm

D.

0.20 mm

182)

The symbol ∅ in drawing indicates:

A.

Radius

B.

Diameter

C.

Centerline

D.

Depth

183)

Which fit ensures “no clearance” and always tight assembly?

A.

Clearance fit

B.

Transition fit

C.

Interference fit

D.

Loose running fit

184)

Interchangeability ensures:

A.

Every part fits with only its mating part

B.

Parts can be replaced without custom fitting

C.

Zero tolerance required

D.

Parts cannot be replaced

185)

Which GD&T control ensures that two features are equidistant about a datum plane?

A.

Flatness

B.

Concentricity

C.

Symmetry

D.

Cylindricity

186)

The dimension “M10 × 1.5” indicates:

A.

Shaft diameter 10 mm

B.

Thread designation (10 mm nominal, 1.5 mm pitch)

C.

Tolerance grade

D.

Surface roughness value

187)

The total tolerance is equal to:

A.

Upper limit + Lower limit

B.

Upper deviation – Lower deviation

C.

Maximum size – Minimum size

D.

Both b and c

188)

If a shaft is 30 mm –0.05/–0.10, then maximum shaft size is:

A.

30.00 mm

B.

29.95 mm

C.

29.90 mm

D.

30.05 mm

189)

A hole is specified as 50.00 +0.12 / +0.00 mm and a shaft as 50.00 –0.03 / –0.10 mm. What is the maximum clearance?

A.

0.22 mm

B.

0.09 mm

C.

0.03 mm

D.

0.12 mm

190)

Hole 30.00 H7 (H7 = +0.025 / 0.000 mm). Shaft 30.00 h6 (h6 = 0.000 / −0.013 mm). What is minimum clearance?

A.

0.012 mm

B.

0.000 mm

C.

−0.013 mm

D.

0.025 mm

191)

A shaft is 25.00 +0.00 / −0.06 mm. What is the tolerance?

A.

0.06 mm

B.

0.00 mm

C.

0.03 mm

D.

0.06/2 mm

192)

Hole = 40.00 +0.10 / +0.00 mm. Shaft = 39.95 +0.00 / −0.05 mm. What is maximum interference?

A.

0.15 mm

B.

0.05 mm

C.

−0.10 mm

D.

0.00 mm