Related Questions

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
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
A Plus
B Minus
C Divide
D None of these
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
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)
The pulsating d.c. applied to power amplifier causes ___________
A Burning of transistor
B Hum in the circuit
C Excessive forward voltage
D None of the above
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
The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be
A Parabolic
B Hyperbolic
C Straight line
D None of these
The ratio of the depth of flow to the diameter of the channel for maximum discharge in a circular channel in open channel flow is
A 0.1
B 0.55
C 0.95
D 1.85
Which of the following types of nuclear reactors is most prone to radioactive hazards?
A Gas cooled reactor
B Molten Sodium Reactor
C Boiling water reactor
D Pressurised water reactor
Which of the following areas or regions is most prone to earthquakes?
A Deccan Plateau
B Ganga\u00adBrahmaputra Valley
C Plains of northern India
D Western Ghats

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