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Q1. | When a JFET is cut off, it's like an __________ switch and when it is saturated, it's like a __________ switch. |

A. | closed, open [Wrong Answer] |

B. | open, closed [Correct Answer] |

C. | open, open [Wrong Answer] |

D. | closed, closed [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ The hex number EB

_{16}represents binary number of

11101011

10010110

10101100

11101011

⇒ Four messages band limited to W, W, 2W and 3W respectively are to be multiplex using Time Division Multiplexing (TDM). The minimum bandwidth required for transmission of this TDM signal is

W

3W

6W

7W

⇒ In a specimen of

*n*type semiconductor, the initial concentration of holes and electrons is

*p*

_{no}and

*n*

_{no}. When the specimen is subjected to radiation, the hole and electron concentration increase to

*p*

_{n}and

*n*

_{n}. Then

*p*

_{n}-

*p*

_{no}=

*n*

_{n}-

*n*

_{no}

*p*

_{n}+

*p*

_{no}=

*n*

_{n}+

*n*

_{no}

*p*

_{n}-

*p*

_{no}=

*n*

_{no}+

*n*

_{no}

*p*

_{n}+

*p*

_{no}=

*n*

_{n}-

*p*

_{no}

⇒ A circuit which cannot demodulate SSB is

balanced modulator

product detector

BFO

phase discriminator

⇒ In the circuit of figure the current through 5 Ω resistance at

*t*= &infin

0.166666666666667

2.5 A

3.1 A

0

⇒ Consider the following statements regarding an antenna:

- It is a transducer
- Its performance is essentially frequency sensitive
- It is a reciprocal device
- With increase in its effective aperture area, width of the radiated beam increases.

1, 2 and 3

1, 2 and 4

2 and 3 only

1 and 4 only

⇒ The magnitude plot of a composite signal

*x(t)*=

*e*

^{3jt}+

*e*

^{4jt}is __________ .

Half wave rectified sinusoid

Full wave rectified sinusoid

Exponentially increasing sinusoid

Exponentially decreasing sinusoid

⇒ Assuming accumulator contain A 64 and the carry is set (1). What will register A and (CY) contain after XRA A?

A 6 H, 1

A 6 H, 0

00 H, 0

00 H, 1

⇒ For the output F to be 1 in the logic circuit shown, the input combination shoul

A = 1, B = 1, C = 0

A = 1, B = 0, C = 0

A = 0, B = 1, C = 0

A = 0, B = 0, C = 1

⇒ A feedback network to be used with an amplifier to provide oscillation is tested and found to give an output of 0.124 V with a 0.5 V input. What must be the minimum gain of the oscillator to provide oscillations?

40

60

100

130

⇒ In an

*n*-

*p*-

*n*transistor, the majority carriers in the base are

electrons

holes

both holes and electrons

either holes or electrons

⇒ Which of the following represents the decimal form of binary 0.0111?

0.16

0.22728

0.9375

0.7964

⇒ The on voltage and forward breakover voltage of an SCR depend on

gate current alone

band gap of semiconductor alone

gate current and semiconductor band gap respectively

semiconductor band gap and gate current respectively

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | Firm ware | 1. | Converts program in high level language to machine language |

B. | Compiler | 2. | Converts assembly language program into machine language |

C. | Assembler | 3. | Software embedded in hardware |

D. | Virtual addressing | 4. | Grouping information between various memories |

A-1, B-2, C-3, D-4

A-2, B-3, C-4, D-1

A-3, B-4, C-1, D-2

A-3, B-1, C-2, D-4

⇒ In order to protect a MOSFET against damage from any stray voltage at the gate

grounding rings are provided

terminals are shorted

source terminal is earthed during transit

none of these

⇒ Maximum rectification efficiency for a half wave rectifier is

1

0.88

0.5

0.406

⇒ When a current flows through a coil of insulated wire, the coil shows the properties of a magnet.

TRUE

FALSE

⇒ Which mode has the minimum cutoff frequency in rectangular wave guides?

TE

_{11}

TE

_{10}

TE

_{01}

TE

_{20}

⇒ A coil resonates at 1 MHz with a resonating capacitance of 72 pF. At 500 pF, resonance is obtained with a resonating capacitor of 360 pF. The self capacitance of coil is

12 pF

24 pF

30 pF

72 pF

⇒ The semiconductor diode which can be used in switching circuit in microwave range is

PIN diode

Varactor diode

Tunnel diode

Gunn diode

⇒ For NOR gate SR flip-flop, the 'no change' condition is

S = 0, R = 0

S = 1, R = 0

S = 0, R = 1

S = 1, R = 1

⇒ Which one of the following statement is correct?

Both Laplace's (L) and Poisson's (P) equation are non linear

L is non linear but P is linear

L is linear but P is non linear

L, P both is linear

⇒ In VHS format the width of tape is

2"

1"

1/2"

1/4"

⇒ A voltage

*v*= 100 sin ω

*t*+ 10 sin 5 ω

*t*is applied to a pure capacitor having capacitance of 1 μF. If ω = 314 rad/sec, the current through the capacitor is

0.0314 cos 314

*t*+ 0.0157 cos 1570

*t*

0.0314 sin 314

*t*+ 0.0157 sin 1570

*t*

0.0314 cos 314

*t*+ 0.0314 cos 1570

*t*

0.0157 cos 314

*t*+ 0.0157 cos 1570

*t*

⇒ An antenna is considered to be in free space where its height above the ground is

λ

2λ

less than 3λ

more than 5λ

⇒ Which one of the following is digital?

Pulse code modulation

Pulse width modulation

Pulse frequency modulation

Pulse position modulation

⇒ For the system in the given fi

*y*=

_{k}*u*+ 0.5

_{k}*y*

_{k - 2}*y*=

_{k}*u*+ 0.5

_{k}*u*

_{k - 2}*y*=

_{k}*u*- 0.5

_{k}*y*

_{k - 2}*y*=

_{k}*u*- 0.5

_{k}*u*

_{k - 2}⇒ The data about

*p*the pull required to lift a weight

*w*by a pulley bloc

3.2 + 0.171

*w*

2.28 + 0.1879

*w*

1.2 + 0.25

*w*

0.6 + 0.3

*w*

⇒ The shunt admittance of a transmission line is given by

γ = R +

*j*ωL

γ = R -

*j*ωL

γ = G +

*j*ωC

γ =

*j*ωGC

⇒ In a full wave diode rectifier circuit each diode carries current for

90° in each cycle

180° in each cycle

270° in each cycle

360° in each cycle