Maintenance & Testing of Electrical Equipments - Electrical Engineering (MCQ) questions and answers
Dear Readers, Welcome to Maintenance & Testing of Electrical Equipments multiple choice questions and answers with explanation. These objective type Maintenance & Testing of Electrical Equipments questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma.
Specially developed for the Electrical Engineering freshers and professionals, these model questions are asked in the online technical test and interview of many companies.
These tutorial are also important for your viva in university exams like Anna university, Pune, VTU, UPTU, CUSAT etc.
1) Which material can be used upto a temperature of 130° C?
- Published on 30 Sep 15
a. Mica
b. Cotton
c. Synthetic resin
d. All of these
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2) Which alloy is used as electrical resistance alloy?
- Published on 30 Sep 15
a. Nickel alloys
b. Nickel chromium alloys
c. Ferro nickel alloys
d. Only a and b
e. All of these
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3) What is the purity of electrically graded aluminium?
- Published on 30 Sep 15
a. 95 %
b. 98.3 %
c. 99.5 %
d. 97.5 %
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4) What is meant by equaliser bus?
- Published on 30 Sep 15
a. The bus connecting series fields in parallel
b. The bus connecting series fields in series
c. The bus connecting shunt fields in parallel
d. The bus connecting shunt fields in series
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5) Which among the following applications uses ward Leonard method of speed control?
- Published on 30 Sep 15
a. Rolling mills
b. Colliery winding motor
c. Lifts and elevators
d. Only a and c
e. All of these
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6) Which type of enclosure is provided for DC motors used in coal handling plants?
- Published on 30 Sep 15
a. Screen protected
b. Open type
c. Totally enclosed fan cooled
d. Drip proof
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7) Which among these is the application of universal motors?
- Published on 30 Sep 15
a. Vacuum cleaners
b. Fans
c. Hair dryers
d. Washing machines
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8) What is the typical value of the capacitor used in ‘capacitor start capacitor run’ induction motor?
- Published on 30 Sep 15
a. 5 μ F
b. 40 μ F
c. 300 μ F
d. 1000 μ F
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9) What is the use of current transformers?
- Published on 30 Sep 15
a. Stepping up AC current
b. Measuring and protection
c. Stepping down AC current
d. Both (b) and (c)
e. All of these
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10) At what angle difference is the main winding and the start winding separated in a spilt phase capacitor start induction motor?
- Published on 30 Sep 15
a. 45° electrical
b. 90° electrical
c. 45° mechanical
d. 90° mechanical
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