15 minute rated motors are suitable for
A) Light duty cranes
B) Medium duty cranes
C) Heavy duty cranes
D) All of the above
Correct Answer:
Verified
Q11: Ball-bearings are
A)Used up to 75 kW motors
B)Of
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
Q17: For medium duty cranes the short time
Q18: The cost of an induction motor will
Q19: Which of the following motors has series
Q20: Which of the following motors is preferred
Q21: For crane travel which off the following
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