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- Maintenance & Testing of Electrical Equipment Test Question - Set 2
MCQs 1: On what factors is the rated voltage selected for an induction motor?
MCQs 2: On what factors does the size of the induction motor depend?
MCQs 3: On what type of bearing does the heavy power electrical machine rotate?
MCQs 4: What is the temperature limit for the storage of machines at site before installation?
Temperature above + 25 °C
Temperature above + 5 °C
Temperature less than 10 °C
Temperature above 15 °C
MCQs 5: What is the main cause of harmful vibrations in the machine?
Mechanically unbalanced rotor
Bent or cracked shaft
An excessively pulsating load
All of these
None of these
MCQs 6: Which types of bearings are used for fractional HP motors? i. Sleeve bearing ii. Ball bearing iii. Roller bearing iv. Needle bearing
MCQs 7: What is / are the functions of sealing device used along with bearings?
To prevent leakage of oil from the bearing housing
To prevent dust, water, dirt etc from entering the bearing housing
Both (a) and (b)
None of these
MCQs 8: What is the maximum rated output for an engine driven synchronous generator?
MCQs 9: Which type of cooling system is preferred for turbo alternators?
MCQs 10: Which type of rotor is used by Hydro Generators?
MCQs 11: Which type of rotor is designed for synchronous motor rating upto 5 kW?
MCQs 12: What is / are the different type(s) of excitation system of a synchronous motor?
MCQs 13: At which power angle is the pull out torque developed in the synchronous motor?
MCQs 14: What type of circuits use static rectifiers?
Circuits where storage batteries are not essential
Circuits where storage batteries are essential
Used in all the AC and DC circuits along with batteries
Used in AC circuits only
MCQs 15: How is the maximum discharge current calculated?
Maximum discharge current = (continuous load + rated voltage) / (short time load)
Maximum discharge current = (continuous load + short time load) / (rated voltage)
Maximum discharge current = rated voltage ( continuous load + short time load)
Maximum discharge current = (short time load + rated voltage) / (continuous load)
MCQs 16: Which element is used as the cathode in lead acid battery?
MCQs 17: What is the value of open circuit voltage in a dry cell?
MCQs 18: Which charging method is employed for charging a Lead acid battery?
MCQs 19: Which solutions are added into the lead acid battery?
MCQs 20: Which connection is preferred for connecting line tap changers to transformers?
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