In a lamp load when more than one lamp are switched on the total resistance of the load __________?
A. increases
B. decreases
C. remains same
D. none of the above
Category: Engineeeing Mcqs
Two units are homologous when they are geometrically similar and have _______________?
A.Similar stream lines
B.Same Reynolds number
C.Same efficiency
D.Same Froud’s number
E.None of these answers
Resistance of 220 V, 100 W lamp will be __________?
A. 4.84 Q
B. 48.4 Q
C. 484 ft
D. 4840 Q
When electric current passes through a bucket full of water, lot of bubbling is observed. This suggests that the type of supply is __________?
A. A. C.
B. D. C.
C. any of above two
D. none of the above
It becomes more difficult to remove __________?
A. any electron from the orbit
B. first electron from the orbit
C. second electron from the orbit
D. third electron from the orbit
When one leg of parallel circuit is opened out, the total current will __________?
A. reduce
B. increase
C. decrease
D. become zero
If the efficiency of a machine is to be high, what should be low?
A. Input power
B. Losses
C. True component of power
D. kWh consumed
E. Ratio of output to input
Whether circuit may be AC. or D. C, which of the following is most effective in reducing the magnitude of the current?
A. Reactor
B. Capacitor
C. Inductor
D. Resistor
A glass rod when rubbed with silk cloth is charged because ___________?
A. it takes in proton
B. its atoms are removed
C. it gives away electrons
D. it gives away positive charge
Electric current passing through the circuit produces __________?
A. magnetic effect
B. luminous effect
C. thermal effect
D. chemical effect
E. all above effects
