RK Engineering Work Shop Milling Machine Operator Interview Questions and Answers for Experienced

Swapping two numbers without using a temp variable

• Use arithmetic operations to swap the values

• Add the two numbers and store the result in the first variable

• Subtract the second variable from the result and store it in the second variable

• Subtract the second variable from the first variable to get the original value of the second variable

• Example: a=5, b=7; a=a+b=12, b=a-b=5, a=a-b=7

The current in a transformer is made by inducing voltage across the primary coil.

• The primary coil of a transformer is connected to an alternating current (AC) source.

• The alternating current in the primary coil creates a changing magnetic field.

• This changing magnetic field induces a voltage across the secondary coil.

• The induced voltage in the secondary coil causes a current to flow through it.

• The current in the secondar...read more

DC shunt motors are a type of direct current motor that have a parallel field winding and a series armature winding.

• DC shunt motors have a parallel field winding and a series armature winding.

• They are commonly used in applications that require constant speed and moderate starting torque.

• The speed of a DC shunt motor can be controlled by varying the field current or the armature voltage.

• DC shunt motors are widely used i...read more

A DC shunt motor is a type of direct current motor that has a shunt field winding connected in parallel with the armature winding.

• The field winding and armature winding are connected in parallel

• The shunt motor has a relatively constant speed-torque characteristic

• The speed of the motor can be controlled by varying the field current

• The motor provides good starting torque

• The shunt motor is commonly used in applications wh...read more