The power MOSFET device is a___________?
(A) Current controlled unipolar device
(B) Voltage controlled unipolar device
(C) Current controlled bipolar device
(D) Voltage controlled bipolar device
In dual converters________________?
(A) Both rectifiers provides positive current to the load
(B) Both rectifiers provide negative current to the load
(C) One rectifiers provide positive current to the load and the other negative current
(D) One rectifier provide positive current to the source and the other negative current to the load
TRIAC is a semiconductor power electronic device which contains____________?
(A) Two SCR’s connected in reverse parallel
(B) Two SCR’s connected in parallel
(C) Two SCR’s connected in series
(D) Two BJT’s connected in series
The curve between V and I of SCR when anode is positive w.r.t cathode and when anode is negative w.r.t cathode are known as_____________________?
(A) both as forward characteristics
(B) both as reverse characteristics
(C) former as forward characteristics and later as reverse characteristics
(D) former as reverse characteristics and later as forward characteristics
An SCR can be used___________?
(A) as static conductor
(B) for power control
(C) for speed control of dc shunt motor
(D) All of these
With gate open, the maximum anode current at which SCR is turned off from ON condition is called____________?
(A) breakdown voltage
(B) peak reverse voltage
(C) holding current
(D) latching current
A crowbar is a circuit which is used to protect a_____________?
(A) voltage sensitive load from excessive dc power supply output voltages
(B) current sensitive load from excessive dc power supply output voltages
(C) voltage sensitive load from excessive ac power supply output voltages
(D) current sensitive load from excessive ac power supply output voltages
A full wave rectifier with resistive load produces___________?
(A) Second harmonic
(B) Third harmonic
(C) Fifth harmonic
(D) Do not produce harmonics
An ideal diode is___________?
(A) Unidirectional
(B) Bidirectional
(C) Fixed voltage polarity
(D) Only (a) and (c)