Electrician Theory 2nd Year – ITI Nimi Mock Test (All Topics)

Mock Test for Electrician Theory - ITI Second Year

This test is designed to help ITI Student prepare for NIMI-based Electrician Second Year exams. It includes all modules practice questions and aligned with the latest exam pattern of Ncvt. 

Included Topics:

1. DC Generator
2. DC Motor
3. AC Three Phase Motor
4. AC Single Phase Motor
5. Alternator, Synchronous Motor & MG Set
6. Electronics Practice
7. Control Panel Wiring and Circuit Breakers & Relays
8. AC and DC Motor Devices
9. Inverter UPS & Electric Vehicle Charging.

Mock Test Format:

• Trade: Electrician
• Year: 2nd Year
• Subject: Electrician Trade Theory
• 4 options per question
• 1 mark for each correct answer
• No negative marking
• Language Options: English, Hindi, Marathi, Bangali, Tamil, Telugu, Gujarati and Punjabi.

Sample Questions:

• Total Questions: 10
• Language: English
• Topic: DC Motor

Q1. Why the holding coil of a 3 point starter is connected in series with shunt field?

1. To limit the load current
2. To run motor at low voltage
3. To hold the handle plunger firmly
4. To protect the motor from high speed

Q2. Which speed control method of D.C series motor is used for electric train?

1. Field diverter method
2. Field tapping method
3. Armature diverter method
4. Supply voltage control method

Q3. Which speed control method is used in food mixture motors?

1. Voltage control method
2. Field diverter control method
3. Armature diverter method
4. Series field tapping method

Q4. Which type of DC armature winding the front pitch (YF) is greater than back pitch (YB)?

1. Lap winding
2. Wave winding
3. Progressive winding
4. Retrogressive winding

Q5. Which insulating material used in winding is a highly non-hygroscopic and possess good electrical strength?

1. Empire cloth
2. Triplex paper
3. Millinex paper
4. Leatheroid paper

Q6. Why the direction of rotation is changed only by changing the armature current direction in a D.C compound motor?

1. Maintain rated speed
2. Maintain motor characteristics
3. Avoid armature reaction effect
4. Prevent motor from over loading

Q7. How many parallel paths in duplex lap winding in the armature of 4 pole D.C. Motor?

1. 2
2. 4
3. 8
4. 6

Q8. Why series motor produce high torque and speed initially without load?

1. Absence of back emf
2. Load current flows through field winding
3. Armature current and field current are same
4. Series field winding wound with thick wire

Q9. Why shunt field coil is connected in series with holding coil in D.C three point starter?

1. Increase the holding coil current
2. Decrease the holding coil current
3. Protect the shunt field from over current
4. Protect the motor in case of open in shunt field

Q10. What is the purpose of series resistor connected with holding coil in a D.C. four point starter?

1. Limit the current in holding coil
2. Increase the current in holding coil
3. Increase the voltage in holding coil
4. Decrease the voltage in holding coil