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Create and set up a CBT environment with your preferred subjects.
Practice JAMB CBT with real UTME past questions in CBT format.
CB-WASSCE styled past question practice.
SSCE & GCE styled past question practice.
The diagram above is the heating curve for a solid, QR is the?
The efficiency of the pulley system shown above is 80%. find the effort E required to lift the load of 1200N
The diagram above shows a plank RS pivoted its center of gravity O and is in equilibrium with the weight P and Q. If a weight 2P is added to P the plank will be in equilibrium again by?
A body of mass 4 kg resting on a smooth horizontal plane is simultaneously acted upon by two perpendicular forces 6N and 8N. Calculate the acceleration of the motion
A force F required to keep a 5 kg mass moving round a cycle of radius 3.5 m at a speed of 7 ms-1. What is the speed, if the force is tripled?
The resultant of two forces 12N and 5N is 13N. What is the angle between the two forces?
The dimension of electromotive force are?
I. for current amplification.
II. for voltage stabilization.
III. for power amplification.
IV. as a switch.
which of the above are the uses of transistor?
When a pure semiconductor is heated, its resistance?
zener diode is used for?
Caesium has a work function of 3 x 10\(^{-19}\)J. The maximum energy of liberated electrons when it is illuminated by light of frequency 6.7 x 10\(^{14}\)
HZ is? [h = 6.6 x 10\(^{-34}\)Js]
A step-down transformer has a power output of 50 W and efficiency of 80%. if the mains supply voltage is 200 v, calculate the primary current of the transformer.
The d.c generator has essentially the same components as the a.c generator except the presence of?
A generator is on daily use and in the process, ten 60 W and five 40 W tungsten bulbs are on for the same time interval. the energy consumed daily is?
An electric generator has e.m.f. of 240 V and an internal resistance of 1Ω if the current supplied by the generator is 20A when the terminal voltage is 220 V, find the ratio of the power supplied to the power dissipated?
A short chain is sometimes attached to the back of a petrol tanker to?
Short sightedness can be corrected by what type of lens?
In the microscope, the eyepiece lens merely acts as?
An object placed at the bottom of a well full of clear water appears closer to the surface due to?
Convex mirror are used as driving mirrors because images formed are?