The notch angle of the Izod impact test specimen is

The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.

A

Plus

B

Minus

C

Divide

D

None of these

The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)

A

$$\frac{8}{{15}}{{\text{C}}_{\text{d}}} \times 2{\text{g}} \times {\text{H}}$$

B

$$\frac{8}{{15}}{{\text{C}}_{\text{d}}} \times 2{\text{g}} \times {{\text{H}}^{\frac{3}{2}}}$$

C

$$\frac{8}{{15}}{{\text{C}}_{\text{d}}} \times 2{\text{g}} \times {{\text{H}}^2}$$

D

$$\frac{8}{{15}}{{\text{C}}_{\text{d}}} \times 2{\text{g}} \times {{\text{H}}^{\frac{5}{2}}}$$

During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.

A

Equal to

B

Equal and opposite to

C

Less than

D

Greater than

Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is

A

Normal to both current and magnetic field

B

In the direction of current

C

Antiparallel to magnetic field

D

In arbitrary direction

Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is

A

Normal to both current and magnetic field

B

In the same direction as current

C

In a direction anti parallel to magnetic field

D

None of the above

The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the __________ stress.

A

Yield point

B

Breaking

C

Ultimate

D

None of these

Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.

A

Creep

B

Fatigue

C

Endurance

D

Tensile

What is the value of included angle of a triangular notch for maximum discharge ?

A

30°

B

60°

C

90°

D

120°

The impact between two lead spheres is approximately equal to an __________ impact.

A

Elastic

B

Inelastic

C

Solid

D

None of these

If one angle of a triangle is three times a second angle and the third is 20 degrees more than the second angle, the second angle, in degrees, is

A

32

B

36

C

4

D

None of these

The notch angle of the Izod impact test specimen is

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