Electrical braking of any variety becomes less effective as

Mr. Dubey • 52.30K Points
Coach

Q. Electrical braking of any variety becomes less effective as

(A) speed increases

(B) speed decreases

(D) depends on supply voltage

Correct : Option (B)

Explanation:

 braking torque of the dc machine is given by n (ka2/rb). here, braking torque is directly proportional to the speed of the motor, so as the speed decreases the efficiency of electrical brakes which is dependent on braking torque decreases.

Discusssion

Be the first to start discuss.

Q. Ditus Boelter equation is applicable in case of fluids flowing in

Q. The speed at which robot is capable of manipulating its end effector is known as the____.

Q. When a loop composed of two dissimilar metals could be made to carry a continuous current simply by maintaining the two junctions at different tempera

Q. For ocean sounding where the depth of water is too much and where continuous and accurate record of the depth of water below a boat or ship is to be m

Q. Three rods one made of glass, one of pure aluminium and one made of wrought iron are heated to 150?C. All the rods are 15 mm in diameter and 300 mm lo

Q. In a simple harmonic motion, the velocity vector with respect to displacement vector

Q. Prandtl number for most of dry gases is about

Q. A D.C. motor is still used in industrial applications because it____.

Q. Full stress reversal normally does not occur in bolted connections due to

Q. Electrical braking of any variety becomes less effective as

Discusssion

Related MCQs