The overlap of batten plates with the main members in welded connections should be more than (where t = thickness of the batten plate)

When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as ________ double cover butt joint.

A

Single riveted

B

Double riveted

C

Multi riveted

D

None of these

When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.

A

Single riveted

B

Double riveted

C

Both (A) and (B)

D

None of these

Two plates of the same metal having equal thickness are to be butt welded with electric arc. When the plate thickness changes, welding is achieved by

A

Adjusting the current

B

Adjusting the duration of current

C

Changing the electrode size

D

Changing the electrode coating

In leaf springs, the maximum bending stress developed in the plates is (where W = Load acting on the spring, $$l$$ = Span of the spring, n = Number of plates, b = Width of plates and t = Thickness of plates)

A

$$\frac{{{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$

B

$$\frac{{3{\text{W}}l}}{{2{\text{nb}}{{\text{t}}^2}}}$$

C

$$\frac{{2{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$

D

$$\frac{{3{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$

পাত-দূরত্ব d এবং ধারকত্ব C. এমন একটি সমান্তরাল পাত ধারকের পাত দুটির মাঝখানে d/2 পুরুত্ববিশিষ্ট একটি ধাতব পাত স্থাপন করা হলো। নতুন ধারকত্ব কত হবে? (A metal plate of thickness d/2 is inserted between the plates of a parallel plate capacitor with plate separation d and capacitance C. What is the new capacitance?)

A

C/d

B

C/2

C

4Cd

D

2c

The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded)

A

$$\sqrt {\text{t}} $$

B

1.5 t

C

3 t

D

6 t

Thickness of the frame of a plate and frame filter as compared to that of plates is

A

Less

B

Same

C

More

D

Either A or B

The pull required to tear off the plate per pitch length is (where p = Pitch of rivets, t = Thickness of plates and $${\sigma _{\text{t}}},\,\tau $$ and $${\sigma _{\text{c}}}$$ = Permissible tensile, shearing and crushing stresses respectively)

A

$$\left( {{\text{p}} - 2{\text{d}}} \right){\text{t}} \times {\sigma _{\text{c}}}$$

B

$$\left( {{\text{p}} - {\text{d}}} \right){\text{t}} \times \tau $$

C

$$\left( {{\text{p}} - {\text{d}}} \right){\text{t}} \times {\sigma _{\text{t}}}$$

D

$$\left( {2{\text{p}} - {\text{d}}} \right){\text{t}} \times {\sigma _{\text{t}}}$$

For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as

A

2E

B

3E

C

4E

D

6E

Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface.

A

Plane

B

Curved

C

Ribbed

D

Either A or B

The overlap of batten plates with the main members in welded connections should be more than (where t = thickness of the batten plate)

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