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When electric field is parallel to the plane of incidence, the electromagnetic wave is said to be a.Linearly polarized b.circularly polarized c. Elliptically polarized d. Hyperbolically polarized
1 5660Due to velocity saturation, MOSFET reaches saturation a.Before Pinch off b. After pinch off c. At Q point d. Before Q point e. After Q point
1 4322Natural frequency in the control system represents nature of a. Transient response b. Oscillations c. Overshoot d. Speed of responce
1 5298Which thing is maximum in RLC circuit at resonance a)power consumption b)inductive current c)capacitive voltage
1 1895Which fault is caused by lightening and thuderstorm a. Line to line fault b. Single line to ground fault c. Double line to ground fault
1 2998An active element is one which a. Supplies energy b. Absorbs energy c. Supplies energy and convert energy from one form to another
1 2135The ripple frequency in output of fullwave bridge rectifier is a. Half the input b. Twice the input c. Same as input
1 2342In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans
1 2219Post New Electrical Engineering Questions
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
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