To operate a DC motor in forward and reverse direction with the help of two switching relays with interlocking circuit

Pre Test

Q1. What is the primary purpose of using an interlocking circuit in controlling a DC motor with relays?

a. To increase the speed of the motor

b. To reduce the voltage supplied to the motor

c. To prevent simultaneous activation of conflicting relays

d. To enhance the power output of the motor

Q2.Which component in a DC motor is responsible for reversing the current direction in the armature?

a. Stator

b. Rotor

c. Commutator V

d. Brush

Q3. What happens when both relays are activated simultaneously without an interlocking mechanism?

a. The motor runs at maximum speed

b. The motor stops immediately

c. A short circuit occurs, potentially damaging the motor

d. The motor changes direction rapidly

Q4.Which of the following is NOT a component of a relay?

a. Coil

b.Armature

c. Stator

d. Contacts

Q5.What type of push button is used to complete a circuit when pressed?

a. NC (Normally Closed) Push Button

b. NO (Normally Open) Push Button

c. SPDT (Single Pole Double Throw) Switch

d. DPDT (Double Pole Double Throw) Switch

Lab contributed by : Jodhpur Institute of Engineering & Technology