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.Management Sciences
Category: Electrical Engineering Mcqs
In a certain low-pass filter, fc = 3.5 kHz. Its passband is____________?
A. 3.5 kHz
B. 0 Hz
C. 0 Hz to 3.5 kHz
D. 7 kHz
The crystal oscillator frequency is very stable due to___________of the crystal?
A. Rigidity
B. Vibrations
C. Low Q
D. High Q
Which of the following amplifier is used in a digital to analog converter?
A. Non inverter
B. Voltage follower
C. Summer
D. Difference amplifier
For a good 0.05 uF capacitor ohmmeter reading should___________?
A. show low resistance momentarily and back off to a very high resistance
B. show high resistance momentarily and then a very low resistance
C. go quickly to 50 ohm approximately and remain there
D. not move at all
The equation of 50 Hz current sine wave having r.m.s. value of 60 A is____________?
A. 60 sin 25 t
B. 60 sin 50 t
C. 84.84 sin 3141
D. 42.42 sin 314 t
If the negative potential on the control grid of CRT is increased, the intensity of spot _____________?
A. Is increased
B. Is decreased
C. Remains the same
D. None of the above
The speed/load characteristics of a universal motor is same as that of_____________?
A. A.C. motor
B. D.C. shunt motor
C. D.C. series motor
D. none of the above
Which of the following motors is non-self starting ?
A. D.C. series motor
B. synchronous motor
C. Squirrel cage induction motor
D. Wound round induction motor
Which of the following types of motor enclosure is safest ?
A. Totally enclosed
B. Totally enclosed fan cooled
C. Open type
D. Semi closed
For which of the following ‘ampere second’ could be the unit ?
A. Reluctance
B. Charge
C. Power
D. Energy
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