Related Questions

Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by __________ have residual stresses.
A Forging
B Cold rolling
C Hot rolling
D Casting
In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then
A open belt drive is recommended
B cross belt drive is recommended
C both open belt drive and cross belt drive are recommended
D the drive is recommended depending upon the torque transmitted
A car averages 25 miles per gallon of gasoline when driven in the city and 40 miles per gallon when driven on the highway. According to these rates, which of the following is closest to the number of miles per gallon that the car averages when it is driven 10 miles in the city and then 50 miles on the highway?
A 64
B 36
C 12
D 29
A car averages 25 miles per gallon of gasoline when driven in the city and 40 miles per gallon when driven on the highway. According to these rates, which of the following is closest to the number of miles per gallon that the car average when it is driven 10 miles in the city and then 60 miles on the highway?
A 64
B 36
C 12
D 29
When two shafts of same length, one of which is hollow, transmit equal torques and have equal maximum stress, then they should have equal
A Polar moment of inertia
B Polar modulus
C Diameter
D Angle of twist
It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by
A Universal joint
B Knuckle joint
C Oldham's coupling
D Flexible coupling
The rotating shafts tend to vibrate violently at whirling speeds because
A The system is unbalanced
B Bearing centre line coincides with the axis
C The shafts are rotating at very high speeds
D Resonance is caused due to the heavy mass of the rotor
As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.
A Butt
B Lap
C Welded
D None of these
With single Hooke's joint it is possible to connect two shafts, the axes of which have an angular misalignment up to
A 10°
B 20°
C 30°
D 40°
In a ∆-connected source driving a ∆-connected load, the
A Load voltage and line voltage are one-third the source voltage for a given phase
B Load voltage and line voltage are two-thirds the source voltage for a given phase
C Load voltage and line voltage cancel for a given phase
D Load voltage, line voltage, and source phase voltage are all equal for a given phase

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