If the radius of wire stretched by a load is doubled, then its Young’s modulus will be_______________?
(A) doubled
(B) halved
(C) become four times
(D) become one-fourth
(D) remain unaffected
The Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length________________?
(A) half
(B) same amount
(C) double
(D) one-fourth
(D) four times
The intensity of stress which causes unit strain is called_______________?
(A) unit stress
(B) bulk modulus
(C) modulus of rigidity
(D) modulus of elasticity
(D) principal stress
During a tensile test on a specimen of 1 cm cross-section, maximum load observed was 8 tonnes and area of cross-section at neck was 0.5 cm2. Ultimate tensile strength of specimen is___________________?
(A) 4 tonnes/cm2
(B) 8 tonnes/cm2
(C) 16 tonnes/cm2
(D) 22 tonnes/cm2
(D) none of the above
The lower pair is a_____________________?
(A) open pair
(B) closed pair
(C) sliding pair
(D) point contact pair
(D) does not exist
If there are L number of links in a mechanism then number of possible inversions is equal to_______________?
(A) L + 1
(B) L – 1
(C) L
(D) L + 2
(D) L – 2
A circular bar moving in a round hole is an example of_______________?
(A) incompletely constrained motion
(B) partially constrained motion
(C) completely constrained motion
(D) successfully constrained motion
(D) none of the above
The example of spherical pair is_____________________?
(A) bolt and nut
(B) lead screw of a lathe
(C) ball and socket joint
(D) ball bearing and roller bearing
(D) none of the above
Pitch point on a cam is_________________?
(A) any point on pitch curve
(B) the point on cam pitch curve having the maximum pressure angle
(C) any point on pitch circle
(D) the point on cam pitch curve having the minimum pressure angle
(D) none of the above
A universal joint is an example of_____________________?
(A) higher pair
(B) lower pair
(C) rolling pair
(D) sliding pair
(D) turning pair