Multiple Choice
The advantage of electronically operated automatic control system is
A) Can be located in hazardous locations
B) Needs no maintenance
C) Does not require skilled service personnel
D) No time lags, no transmission delays
E) Does not cost much
Correct Answer:
Verified
Correct Answer:
Verified
Q40: Weld spatter is<br>A)A flux<br>B)A filler material used
Q41: In all the following case chips produced
Q42: Necking is<br>A)Preparation of surface for brazing<br>B)Hole drilled
Q43: Cutting speeds for some materials are given
Q44: Trepanning operation is used for<br>A)Producing large holes<br>B)Under
Q45: In centreless grinding, work piece is clamped
Q46: The commonly used material for thermocouples is<br>A)Chromel-copper<br>B)Chromel-alumel<br>C)Platinum-rhodium<br>D)Any
Q47: While machining cast iron generally cutting fluid
Q49: Straight fluted drills are used for<br>A)Amorphous materials<br>B)Ferrous
Q50: Mechanical seals are used<br>A)To prevent vibrations<br>B)To prevent