Ball-bearings are
A) Used up to 75 kW motors
B) Of long life and low friction loss
C) Costlier and noisy particularly at high speed motor
D) All of the above
Correct Answer:
Verified
Q6: The slip power recovery scheme is used
Q7: The pair used for frequency converter is
A)Squirrel
Q8: The motor in close are used for
Q9: The motor enclosure used in wood-working industry
Q10: The motor enclosure used for industrial purposes
Q12: Sleeve bearings
A)Are normally of bronze
B)Have self lubricating
Q13: Hot bearings of a DC motor may
Q14: The least expensive drive is
A)Belt drive
B)Rope drive
C)Chain
Q15: For very high speed ratio the indispensable
Q16: 15 minute rated motors are suitable for
A)Light
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents