Heavy metals got their names because compared to other atoms, they have
The existence of isotopes was first suggested in 1913 by the radiochemist ______.
Find the odd word/number/letters/number pair from the given alternatives.
Fill in the blanks with suitable letters.
a _ c _ ba _ ca _ cb
Average of the runs of 133 players of a team is 38. If the average of the runs of the male players is 43 and the average of the runs of the female players is 24, then what will be the ratio of the total runs of male players and the total runs of female players respectively?
There are two taps P and Q that can fill a tank in 12 and 24 minutes respectively. Both of them are opened together and after 4 minutes Q is closed. How long more it take for P alone to fill the tank?
A 230/2300 transformer takes no-load current of 6.5 A and absorbs 187 W. If the resistance of the primary is 0.06 what is the active component of current?
In a balanced 3-phase circuit, the line current is 12 A. When the power is measured by two wattmeter method, one meter reads 11 kW while the other reads zero. Power factor of the load is
What happens to the conductivity of semi-conductors when temperature increases?
Superposition theorem can be applied only to-
When a steady current is passed through a ballistic galvanometer, then the deflection will be
In a power plant, if the maximum demand on the plant is equal to the plant capacity, then-
The elements which are not capable of delivering energy by its own are known as _____
The voltage phaser of a circuit is 10∠15°V and the current phasor is 2∠−45° A. The active and reactive powers in the circuit are
The insulation resistance of a cable of length 10 km is 1MΩ. For a length of 100 km of same cable, the insulation resistance will be-
A network has 4 nodes and 3 independent loops. What is the number of branches in the network?
The path of the magnetic flux in a transformer has-
The resistance of the field regulator of a DC shunt motor is of order of
The Slip of an induction motor under full load condition is about-
The Req for the circuit shown in figure is-
A 1 – phase energy meter does 100 revolution in 90 seconds. Meter constant for instrument is 1200 rev./KWh, then power consumed by load is –
A 220 V DC motor has an armature resistance of 0.8 Ω. Find the induced emf when the motor has a full load armature current of 40 A.
The Superposition Theorem is applicable to __________.
A 200/400 V, 20 kVA, 50 Hz single-phase transformer has, at full-load, a copper loss of 120 W. If it has an efficiency of 98% at full-load, determine the iron losses.
The Norton resistance at terminals A and B in the circuit shown in Figure is
Using Millman's theorem, find the current through the load resistance of resistance shown below