List of top Questions asked in BCECE- 2003

In a triode valve, the plate resistance is $10000\, \Omega$ and the anode load resistance is $30000\, \Omega$. If the amplification factor is $36$ , then the voltage gain is :

$n$ identical spherical drops each of radius $r$ are charged to same potential $V$. They combine to form a bigger drop. The potential of the big drop will be :

Magnetic permeability is maximum for:

Four molecules of a gas have speeds $1,2,3$ and $4\, kms ^{-1}$. The value of rms speed of the gas molecules is :

If the work done in blowing a bubble of volume $V$ is $W$, then the work done in blowing a soap bubble of volume $2\, V$ will be :

A metallic rod of length $l$ is placed normal to the magnetic field $B$ and revolved in a circular path about one of the ends with angular frequency $\omega$. The potential difference across the ends will be :

A magnetic needle suspended in a vertical plane at $30^{\circ}$ from the magnetic meridian makes an angle $45^{\circ}$ with the horizontal. What will be the true angle of dip ?

A force $F$ is given by $F=a t +b t^{2}$, where $t$ is time. What are the dimensions of $a$ and $b$ respectively ?

In hydrogen atom when an electron jumps from second to first orbit, the wavelength of line emitted is :

A rain drop of radius $0.3\, mm$ has a terminal velocity of $1\, m / s$ and the viscosity of $1\, m / s$ and the viscosity of air is $18 \times 10^{-5}$ poise. The viscous force on the drop is:

For a series LCR circuit, the phase difference between current and voltage at the condition of resonance will be :

The wavelength of maximum energy, released during an atomic explosion was $2.93 \times 10^{-10} m$. Given that the Wien's constant is $2.93 \times 10^{-3} m - K$, the maximum temperature attained must be of the order of :

The current gain of a transistor in common emitter mode is $49 .$ The change in collector current and emitter current corresponding to the change in base current by $5.0\, \mu A$ are :