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1)
In farward biased Characteristics of junction diode, current value is
- A) i=ISe^V/V
- B) Is=ie^V/VT
- C) i=Ise^VT/V
- D) i=Ise^V/VT
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2)
A certain transformer has 500 turns in the primary winding and 2500 turns in the secondary winding. The turn ratio is
- A) 0.5
- B) 25
- C) 25v
- D) 2500
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3)
A transformer will be out of phase when
- A) output voltage is 0 degree out of phase with input voltage
- B) output voltage is 180 degree out of phase with input voltage
- C) output voltage is 360 degree out of phase with input voltage
- D) output voltage is same as input voltage
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4)
If N denotes the total number of nodes, then number of nodal equations in nodal analysis will be
- A) Number of equations=N-1
- B) Number of equations=N-1/2
- C) Number of equations=N
- D) Number of equations=N-2
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5)
Using superposition theorem, for a circuit containing independent sources, any remaining current source is
- A) replaced by capacitor
- B) replaced by short circuit
- C) made zero by replacing them by open circuit
- D) replaced by close circuit
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6)
The PIV of a half wave rectifier circuit with a shunt capacitor filter is
- A) 2Vm
- B) Vm
- C) Vm/2
- D) 3Vm
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7)
Voltage multipliers are usually used in low current high voltage applications e.g
- A) Stabilizer of refrigerator
- B) Microcontroller
- C) Cathode ray tube in television
- D) Remote control
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8)
The current flow across the base-emitter junction of a p-n-p transistor consists of
- A) Mainly electrons
- B) Equal numbers of holes and electrons
- C) Mainly holes
- D) The leakage current
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9)
The value of Ia for given circuit is
- A) Ia=Io
- B) Ia= 3A
- C) Ia= -3A
- D) Ia=6v
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10)
When a diode is reversed biased
- A) It will act as short circuit
- B) It will act as an open circuit
- C) It will act as close circuit
- D) maximum current flows
