Related Questions

The pulsating torque exerted by steam locomotives causes which of the following?
A Jolting and skidding
B Hammer blow
C Pitching
D All of the above
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?
A The voltage remains at one polarity and at a steady level
B The voltage remains at one polarity but changes value periodically
C The voltage causes current to flow in two directions at the same time
D The voltage reverses polarity periodically
E None of the above
Which of the following is most prone to pulsating discharge flow ?
A Centrifugal pump
B Reciprocating pump
C Gear pump
D Axial flow pump
The loud pulsating noise heard within the cylinder of an internal combustion engine is known as
A Detonation
B Turbulence
C Pre-ignition
D Supercharging
স্পন্দনশীল ডিসি থেকে ধ্রুব ডিসি ভোল্টেজ পেতে নিচের কোন যন্ত্রটি ব্যবহার করা হয়? (Which of the following devices is used to get a pure DC voltage from pulsating DC?)
A ব্যাটারী (Battery )
B রোধ (Resistor)
C ডায়োড (Diode)
D ধারক (Capacitor)
A class A power amplifier is sometimes called ___________ amplifier
A Symmetrical
B Single-ended
C Reciprocating
D Differential
The output power of a transistor amplifier is more than the input power because the additional power is supplied by ___________
A Transistor
B Biasing circuit
C Collector supply VCC
D None of the above
The bandwidth of a single stage amplifier is ___________ that of a multistage amplifier
A More than
B The same as
C Less than
D Data insufficient
When no signal is applied, the approximate collector efficiency of class A power amplifier is
A 10%
B 0%
C 25%
D 50%
When negative voltage feedback is applied to an amplifier, its voltage gain ___________
A Is increased
B Is reduced
C Remains the same
D None of the above

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