Maintenance & Testing Of Electrical Equipment Test Question Start Creating PDF

MCQ: Which material can be used upto a temperature of 130° C?

1. Mica
2. Cotton
3. Synthetic resin
4. All of these

MCQ: Which alloy is used as electrical resistance alloy?

1. Nickel alloys
2. Nickel chromium alloys
3. Ferro nickel alloys
4. Only a and b
5. All of these

MCQ: What is the purity of electrically graded aluminium?

1. 95 %
2. 98.3 %
3. 99.5 %
4. 97.5 %

MCQ: What is meant by equaliser bus?

1. The bus connecting series fields in parallel
2. The bus connecting series fields in series
3. The bus connecting shunt fields in parallel
4. The bus connecting shunt fields in series

MCQ: Which among the following applications uses ward Leonard method of speed control?

1. Rolling mills
2. Colliery winding motor
3. Lifts and elevators
4. Only a and c
5. All of these

MCQ: Which type of enclosure is provided for DC motors used in coal handling plants?

1. Screen protected
2. Open type
3. Totally enclosed fan cooled
4. Drip proof

MCQ: Which among these is the application of universal motors?

1. Vacuum cleaners
2. Fans
3. Hair dryers
4. Washing machines

MCQ: What is the typical value of the capacitor used in ‘capacitor start capacitor run’ induction motor?

1. 5 μ F
2. 40 μ F
3. 300 μ F
4. 1000 μ F

MCQ: What is the use of current transformers?

1. Stepping up AC current
2. Measuring and protection
3. Stepping down AC current
4. Both (b) and (c)
5. All of these

MCQ: At what angle difference is the main winding and the start winding separated in a spilt phase capacitor start induction motor?

1. 45° electrical
2. 90° electrical
3. 45° mechanical
4. 90° mechanical