M

Mr. Dubey • 52.26K Points
Coach 

Q. Which of the following statement is correct regarding power screws?

(A) The efficiency of a self locking screw can not be more than 50%
(B) The efficiency of Acme (trapezoidal) thread is less than that of a square thread
(C) If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50%
(D) Both (A) and (B)
Correct : Option (D)

Share

Previous

Next

Discusssion

Login to discuss.

Be the first to start discuss.

Related MCQs

Q. The shear plane in case of bolts should

Q. Two speed reverse gear arrangement is generally provided in case of

Q. Eye bolts are used for

Q. Pick out the correct statement.

Q. Which of the following treatment is often recommended for parts operating under corrosive conditions?

Q. When a conductor is suspended between two supports at the same level it taken the shape of

Q. If a heat enine gives an output of 3 kW when the input is 10,000 J/s, then the thermal efficiency of the engine will be

Q. Within the boiler the temperature of steam is highest in

Q. Which of the following is the best braking method?

Q. Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the