Magnetic circuit breaker has trip action.
D.C. shunt relays are made of
A flat surface can be produced by a lathe machine, if the cutting tool moves _____
In order that current should flow without causing excessive heating or voltage drop, the relay contacts should
On drilling machine, which process is known as reaming?
Circuit breakers usually operate under
Circuit breakers are essentially
The function of taper turning process is to ____
The current zero interruption, in oil and air blast circuit breakers, is achieved by
The process of bevelling sharp ends of a workpiece is called as ________
An efficient and a well designed protective relaying should have
Burden of a protective relay is the power
What is the function of cone pulley drive in lathe machines?
Directional relays are based on flow of
Which of the following is a mechanism for mechanized movements of the carriage along longitudinal axis?
A differential relay measures the vector difference between
A transmission line is protected by
Which process squeezes metals into peaks and troughs with plastic deformation?
Large internal faults are protected by
Which of the following operations is/are performed on a lathe machine?
Protective relays are devices that detect abnormal conditions in electrical circuits by measuring
The voltage appearing across the contacts after opening of the circuit breaker is called voltage.
The process of chamfering the entrance of a drilled hole is known as_____
Which of the following statements is/are false for machine tools?
1. Pillar drilling machine drills holes up to 75 mm
2. Regulating wheel is a component of surface grinding machine
3. Sensitive drilling machine is also known as bench drilling machine
4. The chuck of an internal grinding machine placed in tailstock is driven by an electric motor
The workpiece motion and tool motion respectively in a horizontal boring machine are.......
