A semi-conductor diode can be used as:
a)A full wave rectifier
b)An amplifier
c)A transmitter
d)A half wave rectifier
The process in which no external work is performed is called:
a)Isochoric
b)Isobaric
c)Adiabatic
d)Isothermal
In vibratory motion the maximum displacement of the body on either side of its equilibrium position is called:
a)Amplitude
b)Displacement
c)Distance
d)Frequency
In the projectile motion, the acceleration in the horizontal direction:
a)Varies with time
b)Is positive
c)Is zero
d)Remains same
A ball is thrown horizontally with 19.6 m/s. After 2 seconds it’s horizontal velocity component will be:
a)4.9 m/s
b)39.2 m/s
c)9.8 m/s
d)19.6 m/s
If the fundamental frequency of vibration of a string fixed both ends is 50Hz, the fourth harmonic will be:
a)250 Hz
b)100 Hz
c)12.5 Hz
d)200 Hz
In standing waves, the distance between two consecutive nodes or anti-nodes is:
a)λ / 4
b)λ
c)λ / 2
d)2λ
1 kilowatt-hour (kWh) equals to:
a)3.6 J
b)3.6 MJ
c)3.6 GJ
d)3.6 kJ
A body of mass 4 kg is moving a circle of radius 2m. If the body moves round a complete circle, what is the work done by the body:
a)16 J
b)Zero
c)8 J
d)6 J
The product of frequency and wavelength of a wave equals to:
a)Amplitude of the wave
b)Displacement of the wave
c)Time period of the wave
d)Speed of the wave
