Q1:-The maximum power developed by a synchronous motor depends on ________________ & _________________.
1. Supply voltage, Maximum value of load angle
2. Supply voltage, Excitation current
3. Excitation current, Maximum value of load angle
4. Output voltage,Supply frequency
Q3:-Assertion (A): It is possible to design a current source using operational amplifier
Reason (R): Operational amplifier is a current controlled voltage source
1.Both A and R are individually true and R is the correct explanation of A
2.Both A and R are individually true but R is not the correct explanation of A
3.A is true but R is false
4.A is false but R is true
ANSWER:-A is true but R is false
ANSWER:-Square of the frequency
1. Supply voltage, Maximum value of load angle
2. Supply voltage, Excitation current
3. Excitation current, Maximum value of load angle
4. Output voltage,Supply frequency
ANSWER:-Supply voltage, Excitation current
Q2:-The Anode current through a conducting SCR is 12 A. If its gate current is made one-third, then find Anode current.
1.5A
2.4A
3.0A
4.12A
ANSWER:- 0A
Q3:-Assertion (A): It is possible to design a current source using operational amplifier
Reason (R): Operational amplifier is a current controlled voltage source
1.Both A and R are individually true and R is the correct explanation of A
2.Both A and R are individually true but R is not the correct explanation of A
3.A is true but R is false
4.A is false but R is true
ANSWER:-A is true but R is false
Q4:-A 220V, 100W lamp has a working resistance of:-
2.2Ω
480Ω
960Ω
484Ω
2.2Ω
480Ω
960Ω
484Ω
ANSWER:-484Ω
Q5:-Eddy current loss in a transformer is proportional to:-
1.Frequency
2.Supply voltage
3.Square of the frequency
4.Square of the voltage only
1.Frequency
2.Supply voltage
3.Square of the frequency
4.Square of the voltage only
ANSWER:-Square of the frequency
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